update en-CA translation
update en-CA translation

Change-Id: Iaaa4156084cb7b038b7808bff129fc18bf312570
Reviewed-on: https://gerrit.instructure.com/211083
Tested-by: Jenkins

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