doc: fix bugs in _construct() example

PR-URL: #36509
Reviewed-By: Antoine du Hamel <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Rich Trott <[email protected]>
Reviewed-By: Robert Nagy <[email protected]>

Author: mkbaranovskyi

doc/api/stream.md

@@ -2078,10 +2078,9 @@ class WriteStream extends Writable {
   constructor(filename) {
     super();
     this.filename = filename;
-    this.fd = fd;
   }
   _construct(callback) {
-    fs.open(this.filename, (fd, err) => {
+    fs.open(this.filename, (err, fd) => {
       if (err) {
         callback(err);
       } else {