update zh-Hans translation
update zh-Hans translation

Change-Id: I2690375bee6a22b719c010cc415bb4ce704b8e98
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/295392
Tested-by: Service Cloud Jenkins <9144042a601061f88f1e1d7a1753ea3e2972119d@instructure.com>

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