Whitespace cleanup.

module/VuFind/src/VuFind/Cache/KeyGeneratorTrait.php

@@ -44,7 +44,7 @@ trait KeyGeneratorTrait
      * Method to ensure uniform cache keys for cached VuFind objects.
      *
      * @param string|null $suffix Optional suffix that will get appended to the
-     *                            object class name calling getCacheKey()
+     * object class name calling getCacheKey()
      *
      * @return string
      */