Issue #2575967 by rashidkhan, mpdonadio: Documentation for on403 function in...

Issue #2575967 by rashidkhan, mpdonadio: Documentation for on403 function in Http4xxController file is wrong

core/modules/system/src/Controller/Http4xxController.php

@@ -25,7 +25,7 @@ public function on401() {
    * The default 403 content.
    *
    * @return array
-   *   A render array containing the message to display for 404 pages.
+   *   A render array containing the message to display for 403 pages.
    */
   public function on403() {
     return [