update pt translation
update pt translation

Change-Id: I1db6d2a5be51f74af8519008f543be6c817ce752
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/304906
Tested-by: Service Cloud Jenkins <9144042a601061f88f1e1d7a1753ea3e2972119d@instructure.com>

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