doc: remove extraneous "for example" text

No need to announce obvious example code as being example code. Remove
unneeded "for example" text as one small way to try to keep the docs
more concise..

PR-URL: nodejs#18890
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Matheus Marchini <matheus@sthima.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com>

doc/api/addons.md

@@ -292,7 +292,7 @@ Each of these examples using the following `binding.gyp` file:
 ```
 
 In cases where there is more than one `.cc` file, simply add the additional
-filename to the `sources` array. For example:
+filename to the `sources` array:
 
 ```json
 "sources": ["addon.cc", "myexample.cc"]

doc/api/async_hooks.md

@@ -451,8 +451,6 @@ Note that `resolve()` does not do any observable synchronous work.
 rejected at this point, if the `Promise` was resolved by assuming the state
 of another `Promise`.
 
-For example:
-
 ```js
 new Promise((resolve) => resolve(true)).then((a) => {});
 ```
@@ -481,8 +479,6 @@ changes:
 * Returns: {number} The `asyncId` of the current execution context. Useful to
   track when something calls.
 
-For example:
-
 ```js
 const async_hooks = require('async_hooks');
 
@@ -493,7 +489,7 @@ fs.open(path, 'r', (err, fd) => {
 ```
 
 The ID returned from `executionAsyncId()` is related to execution timing, not
-causality (which is covered by `triggerAsyncId()`). For example:
+causality (which is covered by `triggerAsyncId()`):
 
 ```js
 const server = net.createServer(function onConnection(conn) {
@@ -517,8 +513,6 @@ See the section on [promise execution tracking][].
 * Returns: {number} The ID of the resource responsible for calling the callback
   that is currently being executed.
 
-For example:
-
 ```js
 const server = net.createServer((conn) => {
   // The resource that caused (or triggered) this callback to be called

doc/api/buffer.md

@@ -925,8 +925,6 @@ added: v8.2.0
 For objects whose `valueOf()` function returns a value not strictly equal to
 `object`, returns `Buffer.from(object.valueOf(), offsetOrEncoding, length)`.
 
-For example:
-
 ```js
 const buf = Buffer.from(new String('this is a test'));
 // Prints: <Buffer 74 68 69 73 20 69 73 20 61 20 74 65 73 74>
@@ -935,8 +933,6 @@ const buf = Buffer.from(new String('this is a test'));
 For objects that support `Symbol.toPrimitive`, returns
 `Buffer.from(object[Symbol.toPrimitive](), offsetOrEncoding, length)`.
 
-For example:
-
 ```js
 class Foo {
   [Symbol.toPrimitive]() {

doc/api/child_process.md

@@ -225,8 +225,6 @@ a Promise for an object with `stdout` and `stderr` properties. In case of an
 error, a rejected promise is returned, with the same `error` object given in the
 callback, but with an additional two properties `stdout` and `stderr`.
 
-For example:
-
 ```js
 const util = require('util');
 const exec = util.promisify(require('child_process').exec);

doc/api/dns.md

@@ -114,8 +114,6 @@ Returns an array of IP address strings, formatted according to [rfc5952][],
 that are currently configured for DNS resolution. A string will include a port
 section if a custom port is used.
 
-For example:
-
 <!-- eslint-disable semi-->
 ```js
 [
@@ -369,8 +367,6 @@ function will contain an array of objects with the following properties:
 * `order`
 * `preference`
 
-For example:
-
 <!-- eslint-skip -->
 ```js
 {
@@ -558,8 +554,6 @@ Sets the IP address and port of servers to be used when performing DNS
 resolution. The `servers` argument is an array of [rfc5952][] formatted
 addresses. If the port is the IANA default DNS port (53) it can be omitted.
 
-For example:
-
 ```js
 dns.setServers([
   '4.4.4.4',

doc/api/domain.md

@@ -239,8 +239,6 @@ perhaps we would like to have a separate domain to use for each request.
 
 That is possible via explicit binding.
 
-For example:
-
 ```js
 // create a top-level domain for the server
 const domain = require('domain');

doc/api/errors.md

@@ -292,8 +292,6 @@ console.error(err.message);
 The `error.stack` property is a string describing the point in the code at which
 the `Error` was instantiated.
 
-For example:
-
 ```txt
 Error: Things keep happening!
    at /home/gbusey/file.js:525:2
@@ -368,8 +366,6 @@ detailed [here](#errors_system_errors).
 A subclass of `Error` that indicates the failure of an assertion. Such errors
 commonly indicate inequality of actual and expected value.
 
-For example:
-
 ```js
 assert.strictEqual(1, 2);
 // AssertionError [ERR_ASSERTION]: 1 === 2
@@ -381,8 +377,6 @@ A subclass of `Error` that indicates that a provided argument was not within the
 set or range of acceptable values for a function; whether that is a numeric
 range, or outside the set of options for a given function parameter.
 
-For example:
-
 ```js
 require('net').connect(-1);
 // throws "RangeError: "port" option should be >= 0 and < 65536: -1"
@@ -1309,9 +1303,8 @@ compiled with ICU support.
 <a id="ERR_NO_LONGER_SUPPORTED"></a>
 ### ERR_NO_LONGER_SUPPORTED
 
-A Node.js API was called in an unsupported manner.
-
-For example: `Buffer.write(string, encoding, offset[, length])`
+A Node.js API was called in an unsupported manner, such as
+`Buffer.write(string, encoding, offset[, length])`.
 
 <a id="ERR_OUT_OF_RANGE"></a>
 ### ERR_OUT_OF_RANGE

doc/api/fs.md

@@ -22,8 +22,6 @@ The arguments passed to the completion callback depend on the method, but the
 first argument is always reserved for an exception. If the operation was
 completed successfully, then the first argument will be `null` or `undefined`.
 
-For example:
-
 ```js
 const fs = require('fs');
 
@@ -36,8 +34,6 @@ fs.unlink('/tmp/hello', (err) => {
 Exceptions that occur using synchronous operations are thrown immediately and
 may be handled using `try`/`catch`, or may be allowed to bubble up.
 
-For example:
-
 ```js
 const fs = require('fs');
 
@@ -402,7 +398,6 @@ A `fs.Stats` object provides information about a file.
 Objects returned from [`fs.stat()`][], [`fs.lstat()`][] and [`fs.fstat()`][] and
 their synchronous counterparts are of this type.
 
-For example:
 ```console
 Stats {
   dev: 2114,
@@ -703,9 +698,6 @@ so introduces a race condition, since other processes may change the file's
 state between the two calls. Instead, user code should open/read/write the
 file directly and handle the error raised if the file is not accessible.
 
-For example:
-
-
 **write (NOT RECOMMENDED)**
 
 ```js
@@ -1356,8 +1348,6 @@ so introduces a race condition, since other processes may change the file's
 state between the two calls. Instead, user code should open/read/write the
 file directly and handle the error raised if the file does not exist.
 
-For example:
-
 **write (NOT RECOMMENDED)**
 
 ```js

doc/api/http2.md

@@ -1090,8 +1090,6 @@ received for this stream from the connected HTTP/2 server. The listener is
 invoked with two arguments: an Object containing the received
 [HTTP2 Headers Object][], and flags associated with the headers.
 
-For example:
-
 ```js
 const http2 = require('http2');
 const client = http2.connect('https://localhost');
@@ -2001,8 +1999,6 @@ keys will be serialized to lower-case. Property values should be strings (if
 they are not they will be coerced to strings) or an Array of strings (in order
 to send more than one value per header field).
 
-For example:
-
 ```js
 const headers = {
   ':status': '200',

doc/api/modules.md

@@ -729,7 +729,7 @@ exports = { hello: false };  // Not exported, only available in the module
 ```
 
 When the `module.exports` property is being completely replaced by a new
-object, it is common to also reassign `exports`, for example:
+object, it is common to also reassign `exports`:
 
 <!-- eslint-disable func-name-matching -->
 ```js

doc/api/n-api.md

@@ -59,8 +59,8 @@ example is: [node-api](https://github.com/nodejs/node-api).
 
 In order to use the N-API functions, include the file
 [node_api.h](https://github.com/nodejs/node/blob/master/src/node_api.h)
-which is located in the src directory in the node development tree.
-For example:
+which is located in the src directory in the node development tree:
+
 ```C
 #include <node_api.h>
 ```

doc/api/os.md

@@ -70,8 +70,6 @@ The properties included on each object include:
   * `idle` {number} The number of milliseconds the CPU has spent in idle mode.
   * `irq` {number} The number of milliseconds the CPU has spent in irq mode.
 
-For example:
-
 <!-- eslint-disable semi -->
 ```js
 [

doc/api/path.md

@@ -79,8 +79,6 @@ The `path.basename()` methods returns the last portion of a `path`, similar to
 the Unix `basename` command. Trailing directory separators are ignored, see
 [`path.sep`][].
 
-For example:
-
 ```js
 path.basename('/foo/bar/baz/asdf/quux.html');
 // Returns: 'quux.html'
@@ -140,8 +138,6 @@ The `path.dirname()` method returns the directory name of a `path`, similar to
 the Unix `dirname` command. Trailing directory separators are ignored, see
 [`path.sep`][].
 
-For example:
-
 ```js
 path.dirname('/foo/bar/baz/asdf/quux');
 // Returns: '/foo/bar/baz/asdf'
@@ -167,8 +163,6 @@ the `path`.  If there is no `.` in the last portion of the `path`, or if the
 first character of the basename of `path` (see `path.basename()`) is `.`, then
 an empty string is returned.
 
-For example:
-
 ```js
 path.extname('index.html');
 // Returns: '.html'
@@ -302,8 +296,6 @@ Zero-length `path` segments are ignored. If the joined path string is a
 zero-length string then `'.'` will be returned, representing the current
 working directory.
 
-For example:
-
 ```js
 path.join('/foo', 'bar', 'baz/asdf', 'quux', '..');
 // Returns: '/foo/bar/baz/asdf'
@@ -497,8 +489,6 @@ Zero-length `path` segments are ignored.
 If no `path` segments are passed, `path.resolve()` will return the absolute path
 of the current working directory.
 
-For example:
-
 ```js
 path.resolve('/foo/bar', './baz');
 // Returns: '/foo/bar/baz'

doc/api/process.md

@@ -58,8 +58,6 @@ The listener callback function is invoked with the exit code specified either
 by the [`process.exitCode`][] property, or the `exitCode` argument passed to the
 [`process.exit()`] method, as the only argument.
 
-For example:
-
 ```js
 process.on('exit', (code) => {
   console.log(`About to exit with code: ${code}`);
@@ -129,8 +127,6 @@ In asynchronous code, the `'unhandledRejection'` event is emitted when the list
 of unhandled rejections grows, and the `'rejectionHandled'` event is emitted
 when the list of unhandled rejections shrinks.
 
-For example:
-
 ```js
 const unhandledRejections = new Map();
 process.on('unhandledRejection', (reason, p) => {
@@ -161,8 +157,6 @@ behavior.
 The listener function is called with the `Error` object passed as the only
 argument.
 
-For example:
-
 ```js
 process.on('uncaughtException', (err) => {
   fs.writeSync(1, `Caught exception: ${err}\n`);
@@ -230,8 +224,6 @@ The listener function is called with the following arguments:
   (typically an [`Error`][] object).
 * `p` the `Promise` that was rejected.
 
-For example:
-
 ```js
 process.on('unhandledRejection', (reason, p) => {
   console.log('Unhandled Rejection at:', p, 'reason:', reason);
@@ -355,8 +347,6 @@ The signal handler will receive the signal's name (`'SIGINT'`,
 The name of each event will be the uppercase common name for the signal (e.g.
 `'SIGINT'` for `SIGINT` signals).
 
-For example:
-
 ```js
 // Begin reading from stdin so the process does not exit.
 process.stdin.resume();
@@ -924,8 +914,6 @@ include the Node.js executable, the name of the script, or any options following
 the script name. These options are useful in order to spawn child processes with
 the same execution environment as the parent.
 
-For example:
-
 ```console
 $ node --harmony script.js --version
 ```
@@ -954,8 +942,6 @@ added: v0.1.100
 The `process.execPath` property returns the absolute pathname of the executable
 that started the Node.js process.
 
-For example:
-
 <!-- eslint-disable semi -->
 ```js
 '/usr/local/bin/node'
@@ -1227,8 +1213,6 @@ Even though the name of this function is `process.kill()`, it is really just a
 signal sender, like the `kill` system call.  The signal sent may do something
 other than kill the target process.
 
-For example:
-
 ```js
 process.on('SIGHUP', () => {
   console.log('Got SIGHUP signal.');
@@ -1504,8 +1488,6 @@ tarball.
   - `'Boron'` for the 6.x LTS line beginning with 6.9.0.
   - `'Carbon'` for the 8.x LTS line beginning with 8.9.1.
 
-For example:
-
 <!-- eslint-skip -->
 ```js
 {
@@ -1709,8 +1691,6 @@ The `process.stdin` property returns a stream connected to
 stream) unless fd `0` refers to a file, in which case it is
 a [Readable][] stream.
 
-For example:
-
 ```js
 process.stdin.setEncoding('utf8');
 

doc/api/querystring.md

@@ -108,8 +108,6 @@ It serializes the following types of values passed in `obj`:
 {string|number|boolean|string[]|number[]|boolean[]}
 Any other input values will be coerced to empty strings.
 
-For example:
-
 ```js
 querystring.stringify({ foo: 'bar', baz: ['qux', 'quux'], corge: '' });
 // returns 'foo=bar&baz=qux&baz=quux&corge='