[CS] Fixed outstanding CS issue in XMLSanitizer.php

Author: alongosz

src/lib/RichText/XMLSanitizer.php

@@ -1,7 +1,7 @@
 <?php
 
 /**
- * @copyright Copyright (C) Ibexa AS. All rights reserved.
+ * @copyright Copyright (C) eZ Systems AS. All rights reserved.
  * @license For full copyright and license information view LICENSE file distributed with this source code.
  */
 declare(strict_types=1);