Apply fixes from StyleCI

Author: StyleCIBot

extensions/realtime/src/Content/ForumContent.php

@@ -1,5 +1,12 @@
 <?php
 
+/*
+ * This file is part of Flarum.
+ *
+ * For detailed copyright and license information, please view the
+ * LICENSE file that was distributed with this source code.
+ */
+
 namespace Flarum\Realtime\Content;
 
 use Flarum\Frontend\Document;
@@ -11,7 +18,7 @@ public function __construct(
         protected SettingsRepositoryInterface $settings
     ) {
     }
-    
+
     public function __invoke(Document $document): void
     {
         $document->payload['flarum-realtime.typing-indicator'] = (bool) $this->settings->get('flarum-realtime.typing-indicator');