doc: fix minor text issues in stream.md

Implement several minor grammar, punctuation, and style fixes in
stream.md.

PR-URL: #24116
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>

Author: Trott

doc/api/stream.md

@@ -46,7 +46,7 @@ There are four fundamental stream types within Node.js:
 * [`Transform`][] - `Duplex` streams that can modify or transform the data as it
   is written and read (for example, [`zlib.createDeflate()`][]).
 
-Additionally this module includes the utility functions [pipeline][] and
+Additionally, this module includes the utility functions [pipeline][] and
 [finished][].
 
 ### Object Mode
@@ -97,7 +97,7 @@ is to limit the buffering of data to acceptable levels such that sources and
 destinations of differing speeds will not overwhelm the available memory.
 
 Because [`Duplex`][] and [`Transform`][] streams are both `Readable` and
-`Writable`, each maintain *two* separate internal buffers used for reading and
+`Writable`, each maintains *two* separate internal buffers used for reading and
 writing, allowing each side to operate independently of the other while
 maintaining an appropriate and efficient flow of data. For example,
 [`net.Socket`][] instances are [`Duplex`][] streams whose `Readable` side allows
@@ -388,7 +388,7 @@ changes:
   not operating in object mode, `chunk` must be a string, `Buffer` or
   `Uint8Array`. For object mode streams, `chunk` may be any JavaScript value
   other than `null`.
-* `encoding` {string} The encoding, if `chunk` is a string
+* `encoding` {string} The encoding if `chunk` is a string
 * `callback` {Function} Optional callback for when the stream is finished
 * Returns: {this}
 
@@ -531,7 +531,7 @@ not draining may lead to a remotely exploitable vulnerability.
 
 Writing data while the stream is not draining is particularly
 problematic for a [`Transform`][], because the `Transform` streams are paused
-by default until they are piped or an `'data'` or `'readable'` event handler
+by default until they are piped or a `'data'` or `'readable'` event handler
 is added.
 
 If the data to be written can be generated or fetched on demand, it is
@@ -610,7 +610,7 @@ until a mechanism for either consuming or ignoring that data is provided. If
 the consuming mechanism is disabled or taken away, the `Readable` will *attempt*
 to stop generating the data.
 
-For backwards compatibility reasons, removing [`'data'`][] event handlers will
+For backward compatibility reasons, removing [`'data'`][] event handlers will
 **not** automatically pause the stream. Also, if there are piped destinations,
 then calling [`stream.pause()`][stream-pause] will not guarantee that the
 stream will *remain* paused once those destinations drain and ask for more data.
@@ -1351,7 +1351,7 @@ Especially useful in error handling scenarios where a stream is destroyed
 prematurely (like an aborted HTTP request), and will not emit `'end'`
 or `'finish'`.
 
-The `finished` API is promisify'able as well;
+The `finished` API is promisify-able as well;
 
 ```js
 const finished = util.promisify(stream.finished);
@@ -1403,7 +1403,7 @@ pipeline(
 );
 ```
 
-The `pipeline` API is promisify'able as well:
+The `pipeline` API is promisify-able as well:
 
 ```js
 const pipeline = util.promisify(stream.pipeline);
@@ -1892,7 +1892,7 @@ changes:
   any JavaScript value.
 * `encoding` {string} Encoding of string chunks. Must be a valid
   `Buffer` encoding, such as `'utf8'` or `'ascii'`.
-* Returns: {boolean} `true` if additional chunks of data may continued to be
+* Returns: {boolean} `true` if additional chunks of data may continue to be
   pushed; `false` otherwise.
 
 When `chunk` is a `Buffer`, `Uint8Array` or `string`, the `chunk` of data will
@@ -2305,7 +2305,7 @@ The `callback` function must be called only when the current chunk is completely
 consumed. The first argument passed to the `callback` must be an `Error` object
 if an error occurred while processing the input or `null` otherwise. If a second
 argument is passed to the `callback`, it will be forwarded on to the
-`readable.push()` method. In other words the following are equivalent:
+`readable.push()` method. In other words, the following are equivalent:
 
 ```js
 transform.prototype._transform = function(data, encoding, callback) {
@@ -2352,7 +2352,7 @@ less powerful and less useful.
   guaranteed. This meant that it was still necessary to be prepared to receive
   [`'data'`][] events *even when the stream was in a paused state*.
 
-In Node.js 0.10, the [`Readable`][] class was added. For backwards
+In Node.js 0.10, the [`Readable`][] class was added. For backward
 compatibility with older Node.js programs, `Readable` streams switch into
 "flowing mode" when a [`'data'`][] event handler is added, or when the
 [`stream.resume()`][stream-resume] method is called. The effect is that, even