[Workflow] Link to class in PHPDoc

Author: OskarStark

src/Symfony/Component/Workflow/Workflow.php

@@ -59,9 +59,9 @@ class Workflow implements WorkflowInterface
 
     /**
      * When `null` fire all events (the default behaviour).
-     * Setting this to an empty array `[]` means no events are dispatched (except the Guard Event).
+     * Setting this to an empty array `[]` means no events are dispatched (except the {@see GuardEvent}).
      * Passing an array with WorkflowEvents will allow only those events to be dispatched plus
-     * the Guard Event.
+     * the {@see GuardEvent}.
      *
      * @var array|string[]|null
      */