update zh-Hans translation
update zh-Hans translation

Change-Id: I29b3d31b73579c818882f578cbd96a4cfe985cde

SwinburneOnline/canvas-lms,SwinburneOnline/canvas-lms,venturehive/canvas-lms,grahamb/canvas-lms,grahamb/canvas-lms,sfu/canvas-lms,SwinburneOnline/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,venturehive/canvas-lms,grahamb/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,SwinburneOnline/canvas-lms,djbender/canvas-lms,grahamb/canvas-lms,venturehive/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,venturehive/canvas-lms,grahamb/canvas-lms,sfu/canvas-lms