update zh-Hans translation
update zh-Hans translation

Change-Id: I7baf3a8324611fad7669730fdcbb4e4867ec00e6

sfu/canvas-lms,grahamb/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,SwinburneOnline/canvas-lms,venturehive/canvas-lms,sfu/canvas-lms,SwinburneOnline/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,venturehive/canvas-lms,roxolan/canvas-lms,roxolan/canvas-lms,HotChalk/canvas-lms,roxolan/canvas-lms,SwinburneOnline/canvas-lms,fronteerio/canvas-lms,venturehive/canvas-lms,grahamb/canvas-lms,fronteerio/canvas-lms,SwinburneOnline/canvas-lms,grahamb/canvas-lms,HotChalk/canvas-lms,grahamb/canvas-lms,roxolan/canvas-lms,fronteerio/canvas-lms,sfu/canvas-lms,HotChalk/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,venturehive/canvas-lms,grahamb/canvas-lms,fronteerio/canvas-lms,djbender/canvas-lms,HotChalk/canvas-lms,djbender/canvas-lms