fix description about MSG example, MSG5 should be MSG1, and MSG6 should be MSG2.
fix description about MSG example, MSG5 should be MSG1, and MSG6 should be MSG2.

sczzq/symmetrical-spoon,sczzq/symmetrical-spoon,sczzq/symmetrical-spoon,sczzq/symmetrical-spoon,sczzq/symmetrical-spoon,sczzq/symmetrical-spoon