doc: correct comment error in stream.md

Fix comment about remove listener (not setting)

PR-URL: nodejs#11804
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Brian White <mscdex@mscdex.net>

doc/api/stream.md

@@ -1016,7 +1016,7 @@ function parseHeader(stream, callback) {
         const remaining = split.join('\n\n');
         const buf = Buffer.from(remaining, 'utf8');
         stream.removeListener('error', callback);
-        // set the readable listener before unshifting
+        // remove the readable listener before unshifting
         stream.removeListener('readable', onReadable);
         if (buf.length)
           stream.unshift(buf);