doc: add transform stream destroy() return value

cjihrig · BethGriggs · commit 3c8dd6d0c3bf · 2020-04-14T11:04:55.000+01:00
PR-URL: #32788 Reviewed-By: Gerhard Stöbich <deb2001-github@yahoo.de> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Robert Nagy <ronagy@icloud.com> Reviewed-By: Zeyu Yang <himself65@outlook.com> Reviewed-By: Anna Henningsen <anna@addaleax.net>
diff --git a/doc/api/stream.md b/doc/api/stream.md
@@ -1488,6 +1488,7 @@ added: v8.0.0
 -->
 
 * `error` {Error}
+* Returns: {this}
 
 Destroy the stream, and optionally emit an `'error'` event. After this call, the
 transform stream would release any internal resources.
