Improved in docs for playing mob animation

Author: utsav132

getting_started/first_2d_game/04.creating_the_enemy.rst

@@ -107,7 +107,7 @@ to select one of these animation names at random. Meanwhile, in the C# code, we
 between ``0`` and ``2`` to select one of these names from the list (array indices start at ``0``). The 
 expression ``GD.Randi() % n`` selects a random integer between ``0`` and ``n-1``.
 
-Finally, we call $AnimatedSprite2D.play() to start playing the chosen animation.
+Finally, we call ``play()`` to start playing the chosen animation.
 
 The last piece is to make the mobs delete themselves when they leave the screen.
 Connect the ``screen_exited()`` signal of the ``VisibleOnScreenNotifier2D`` node