update zh-Hans translation
update zh-Hans translation

Change-Id: I3ed8b0017da3dcd1c70b9ff07b6f8c244e4a2cea
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/275700
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