doc: make caveat in stream.md more concise

PR-URL: #19251
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

Author: Trott

doc/api/stream.md

@@ -21,10 +21,10 @@ The `stream` module can be accessed using:
 const stream = require('stream');
 ```
 
-While it is important for all Node.js users to understand how streams work,
-the `stream` module itself is most useful for developers that are creating new
-types of stream instances. Developers who are primarily *consuming* stream
-objects will rarely (if ever) have need to use the `stream` module directly.
+While it is important to understand how streams work, the `stream` module itself
+is most useful for developers that are creating new types of stream instances.
+Developers who are primarily *consuming* stream objects will rarely need to use
+the `stream` module directly.
 
 ## Organization of this Document