update pt translation
update pt translation

Change-Id: I9ef7f9e5c8bd5bc21cac7d3faa0293b531f5b77e
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/226760
Tested-by: Service Cloud Jenkins <9144042a601061f88f1e1d7a1753ea3e2972119d@instructure.com>

sfu/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,sfu/canvas-lms