Update 'karel_asset.py'

move_karel defaults

karel_asset.py

@@ -51,7 +51,7 @@ def move_karel(canvas, karel, dx, dy):
         canvas.move(shape, dx, dy)
     logger.debug(f"Moved: {karel} by {dx} horizontally, {dy} vertically")
 """
-def move_karel(karel, dx, dy):
+def move_karel(karel, dx:int=0, dy:int=0):
     canvas = karel[1][0]
 
     erase_karel(karel)