- satisfying styleci

- cleared the merge conflict in the phpdoc
- changed some string class names to use ::class

src/Api/Controller/ListNotificationsController.php

@@ -11,10 +11,10 @@
 
 namespace Flarum\Api\Controller;
 
+use Flarum\Api\UrlGenerator;
 use Flarum\Discussion\Discussion;
 use Flarum\Notification\NotificationRepository;
 use Flarum\User\Exception\PermissionDeniedException;
-use Flarum\Api\UrlGenerator;
 use Psr\Http\Message\ServerRequestInterface;
 use Tobscure\JsonApi\Document;