[11.x] Update withErrors() docblock to reflect string parameter suppo…

…rt (#54009)

src/Illuminate/View/View.php

@@ -275,7 +275,7 @@ public function nest($key, $view, array $data = [])
     /**
      * Add validation errors to the view.
      *
-     * @param  \Illuminate\Contracts\Support\MessageProvider|array  $provider
+     * @param  \Illuminate\Contracts\Support\MessageProvider|array|string  $provider
      * @param  string  $bag
      * @return $this
      */