update zh-Hans translation
update zh-Hans translation

Change-Id: I32c85d823bdcc31682ef47f73c48e9618a920f01
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/267500
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