Update zh-HANS.coffee (#5556)
Update zh-HANS.coffee (#5556)

Very tiny change, for GD level, might be used for hackthon
codecombat/codecombat,jeremiahyan/codecombat,javatlacati/codecombat,javatlacati/codecombat,codecombat/codecombat,javatlacati/codecombat,jeremiahyan/codecombat,jeremiahyan/codecombat,jeremiahyan/codecombat,codecombat/codecombat,codecombat/codecombat,codecombat/codecombat,javatlacati/codecombat,javatlacati/codecombat