update pt translation
update pt translation

Change-Id: I95dc524b0a9d0beba3339a10191c990ad303ac8c
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/297637
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