doc: simplify deprecation language

Change instances of `foo has been deprecated` to `foo is deprecated` and
similar.

PR-URL: nodejs#21136
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com>

doc/api/crypto.md

@@ -1880,7 +1880,7 @@ console.log(key.toString('hex'));  // '3745e48...08d59ae'
 ```
 
 The `crypto.DEFAULT_ENCODING` property may be used to change the way the
-`derivedKey` is returned. This property, however, has been deprecated and use
+`derivedKey` is returned. This property, however, is deprecated and use
 should be avoided.
 
 ```js

doc/api/deprecations.md

@@ -192,7 +192,7 @@ The [`fs.readSync()`][] legacy `String` interface is deprecated. Use the
 
 Type: Runtime
 
-The `GLOBAL` and `root` aliases for the `global` property have been deprecated
+The `GLOBAL` and `root` aliases for the `global` property are deprecated
 and should no longer be used.
 
 <a id="DEP0017"></a>
@@ -582,7 +582,7 @@ removed. Please use `sloppy` instead.
 Type: Documentation-only
 
 The `http` module `outgoingMessage._headers` and `outgoingMessage._headerNames`
-properties have been deprecated. Please instead use one of the public methods
+properties are deprecated. Use one of the public methods
 (e.g. `outgoingMessage.getHeader()`, `outgoingMessage.getHeaders()`,
 `outgoingMessage.getHeaderNames()`, `outgoingMessage.hasHeader()`,
 `outgoingMessage.removeHeader()`, `outgoingMessage.setHeader()`) for working
@@ -731,15 +731,15 @@ may be specified.
 Type: Documentation-only
 
 The internal `path._makeLong()` was not intended for public use. However,
-userland modules have found it useful. The internal API has been deprecated
+userland modules have found it useful. The internal API is deprecated
 and replaced with an identical, public `path.toNamespacedPath()` method.
 
 <a id="DEP0081"></a>
 ### DEP0081: fs.truncate() using a file descriptor
 
 Type: Runtime
 
-`fs.truncate()` `fs.truncateSync()` usage with a file descriptor has been
+`fs.truncate()` `fs.truncateSync()` usage with a file descriptor is
 deprecated. Please use `fs.ftruncate()` or `fs.ftruncateSync()` to work with
 file descriptors.
 

doc/api/events.md

@@ -142,7 +142,7 @@ myEmitter.emit('error', new Error('whoops!'));
 ```
 
 To guard against crashing the Node.js process the [`domain`][] module can be
-used. (Note, however, that the `domain` module has been deprecated.)
+used. (Note, however, that the `domain` module is deprecated.)
 
 As a best practice, listeners should always be added for the `'error'` events.
 

doc/api/process.md

@@ -205,7 +205,7 @@ added: v1.4.1
 changes:
   - version: v7.0.0
     pr-url: https://github.com/nodejs/node/pull/8217
-    description: Not handling `Promise` rejections has been deprecated.
+    description: Not handling `Promise` rejections is deprecated.
   - version: v6.6.0
     pr-url: https://github.com/nodejs/node/pull/8223
     description: Unhandled `Promise` rejections will now emit

doc/api/tls.md

@@ -1269,7 +1269,7 @@ deprecated: v0.11.3
 > Stability: 0 - Deprecated: Use [`tls.TLSSocket`][] instead.
 
 The `tls.CryptoStream` class represents a stream of encrypted data. This class
-has been deprecated and should no longer be used.
+is deprecated and should no longer be used.
 
 #### cryptoStream.bytesWritten
 <!-- YAML

doc/api/util.md

@@ -1590,7 +1590,7 @@ util.types.isWebAssemblyCompiledModule(module);  // Returns true
 
 ## Deprecated APIs
 
-The following APIs have been deprecated and should no longer be used. Existing
+The following APIs are deprecated and should no longer be used. Existing
 applications and modules should be updated to find alternative approaches.
 
 ### util.\_extend(target, source)