doc/api: listed server.listen() parameters and done some minor correc…

…tions

listed server.listen() optional parameters that are used in examples but
not documented and corrected some misleading commas.
 Changes :
  modified : doc/api/http.md : updated server.listen()
  modified : doc/api/fs.md
  modified : doc/api/stream.md

doc/api/fs.md

@@ -2651,7 +2651,7 @@ changes:
 Asynchronously creates a directory.
 
 The callback is given a possible exception and, if `recursive` is `true`, the
-first directory path created, `(err [,path])`.
+first directory path created, `(err[, path])`.
 `path` can still be `undefined` when `recursive` is `true`, if no directory was
 created.
 
@@ -4871,7 +4871,7 @@ Returns the number of `bytesRead`.
 For detailed information, see the documentation of the asynchronous version of
 this API: [`fs.read()`][].
 
-### `fs.readSync(fd, buffer [,options])`
+### `fs.readSync(fd, buffer[, options])`
 <!-- YAML
 added:
  - v13.13.0

doc/api/http.md

@@ -1290,10 +1290,10 @@ event is emitted on the server object, and (by default) the socket is destroyed.
 See [`server.timeout`][] for more information on how timeout behavior can be
 customized.
 
-### `server.listen([Port,] [host,] [callback])`
+### `server.listen(Port[, host][, callback])`
 
-* `Port` {Number}
-* `Host` {String}
+* `Port` {number}
+* `Host` {string}
 * `callback` {Function}
 
 Starts the HTTP server listening for connections.

doc/api/stream.md

@@ -2041,7 +2041,7 @@ await finished(compose(s1, s2, s3));
 console.log(res); // prints 'HELLOWORLD'
 ```
 
-### `stream.Readable.from(iterable [,options])`
+### `stream.Readable.from(iterable[, options])`
 <!-- YAML
 added:
   - v12.3.0