Add missing @Override annotation

Change-Id: Id6bf4bd0ef9a9094ea5523b2df8ecdaee365ee50

@@ -29,6 +29,7 @@ class Installed implements CompletedIntentUpdate {
         this.intentData.setState(INSTALLING);
         this.intentData.setState(INSTALLING);
     }
     }
 
 
+    @Override
     public IntentData data() {
     public IntentData data() {
         return intentData;
         return intentData;
     }
     }