update zh-Hans translation
update zh-Hans translation

Change-Id: I9ebe8531275fbe7239576d6113d7ee8214f79d36

sfu/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,sfu/canvas-lms