update pt-BR translation
update pt-BR translation

Change-Id: Ib6ac674e7a8b4bdfb53f70cfe96f7f9b698dd207

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