fixed CS

Author: fabpot

MessageCatalogueInterface.php

@@ -105,15 +105,15 @@ public function add($messages, $domain = 'messages');
      *
      * The two catalogues must have the same locale.
      */
-    public function addCatalogue(MessageCatalogueInterface $catalogue);
+    public function addCatalogue(self $catalogue);
 
     /**
      * Merges translations from the given Catalogue into the current one
      * only when the translation does not exist.
      *
      * This is used to provide default translations when they do not exist for the current locale.
      */
-    public function addFallbackCatalogue(MessageCatalogueInterface $catalogue);
+    public function addFallbackCatalogue(self $catalogue);
 
     /**
      * Gets the fallback catalogue.