update zh-Hans translation
update zh-Hans translation

Change-Id: Icfbf41a240ab9c30502813cc5471160c28a586c3

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