X-Accel Nginx URL updated

Obsolete URL has been updated

src/Symfony/Component/HttpFoundation/BinaryFileResponse.php

@@ -217,7 +217,7 @@ class BinaryFileResponse extends Response
             }
             if ('x-accel-redirect' === strtolower($type)) {
                 // Do X-Accel-Mapping substitutions.
-                // @link http://wiki.nginx.org/X-accel#X-Accel-Redirect
+                // @link https://www.nginx.com/resources/wiki/start/topics/examples/x-accel/#x-accel-redirect
                 foreach (explode(',', $request->headers->get('X-Accel-Mapping', '')) as $mapping) {
                     $mapping = explode('=', $mapping, 2);