update zh-Hans translation
update zh-Hans translation

Change-Id: I8eaa151cc94102042ff4a65332d20b4fa9135167
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/242868
Tested-by: Service Cloud Jenkins <9144042a601061f88f1e1d7a1753ea3e2972119d@instructure.com>

sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms