Issue #3257849: Various core quality updates

package_manager/src/Event/PostDestroyEvent.php

@@ -5,8 +5,8 @@ namespace Drupal\package_manager\Event;
 /**
  * Event fired after the staging area is destroyed.
  *
- * If the stage is being force destroyed ::getStage() may return an instance of
- * Stage that is different from the instance that created the stage.
+ * If the stage is being force destroyed, ::getStage() may return an object of a
+ * different class than the one that originally created the staging area.
  *
  * @see \Drupal\package_manager\Stage::destroy()
  */