Mention autowrap in your first game tutorial

getting_started/step_by_step/your_first_game.rst

@@ -934,6 +934,7 @@ MessageLabel
 -  *Text* : ``Dodge the Creeps!``
 -  *Layout* : "HCenter Wide"
 -  *Align* : "Center"
+-  *Autowrap* : "On"
 
 StartButton
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