minor typo fix

getting_started/step_by_step/your_first_game.rst

@@ -634,7 +634,7 @@ choose one of the three animation types:
 
 First, we get the list of animation names from the AnimatedSprite's ``frames``
 property. This returns an Array containing all three animation names:
-``["walk", "swim", "fly]``.
+``["walk", "swim", "fly"]``.
 
 We then need to pick a random number between ``0`` and ``2`` to select one of these
 names from the list (array indices start at ``0``). ``randi() % n`` selects a