Fix typos in brickout-game/brickout-game.py

Author: khanhkhanhlele

brickout-game/brickout-game.py

@@ -33,7 +33,7 @@
 screen = pygame.display.set_mode(size)
 
 """
-    This is a simple Ball class for respresenting a ball 
+    This is a simple Ball class for representing a ball 
     in the game. 
 """