update zh-Hans translation
update zh-Hans translation

Change-Id: I0d16f4c036f9af0c8e08d13145867eb5c59b9478
Reviewed-on: https://gerrit.instructure.com/212853
Tested-by: Jenkins

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