update th translation
update th translation

Change-Id: I5b27663fe5ca694ed944fa93972ec6ecd15a88fa
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/302900
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