update zh-Hans translation
update zh-Hans translation

Change-Id: Ib0c1494c9063be6d5e4cc2978ae0fe5a7b440bb3

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