update th translation
update th translation

Change-Id: I212544231d4556fdc5dd02f952f1ecc181109f3e
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/282990
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