update zh-Hans translation
update zh-Hans translation

Change-Id: Ia0c8184a351b9742205cb3a7777fd3ba30ab3229
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/267930
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