Small typo in the "Your First Game" tutorial

getting_started/step_by_step/your_first_game.rst

@@ -449,7 +449,7 @@ We want ``Player`` to detect when it's hit by an enemy, but we haven't
 made any enemies yet! That's OK, because we're going to use Godot's
 *signal* functionality to make it work.
 
-Add the following at the top of the script, after ``extends Area2d``:
+Add the following at the top of the script, after ``extends Area2D``:
 
 .. tabs::
  .. code-tab:: gdscript GDScript