update pt-BR translation
update pt-BR translation

Change-Id: Ic5e05dc6889bb43f642dc1c94accd72c4af2d494

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