Removing one comment hash for style

Co-authored-by: Matthew <[email protected]>

getting_started/first_2d_game/03.coding_the_player.rst

@@ -275,7 +275,7 @@ movement. Let's place this code at the end of the ``_process()`` function:
         if velocity.x != 0:
             $AnimatedSprite2D.animation = "walk"
             $AnimatedSprite2D.flip_v = false
-            ## See the note below about the following boolean assignment.
+            # See the note below about the following boolean assignment.
             $AnimatedSprite2D.flip_h = velocity.x < 0
         elif velocity.y != 0:
             $AnimatedSprite2D.animation = "up"