update en-CA translation
update en-CA translation

Change-Id: I6552642c16f7e29c8f1f437d8e8fa264e2a48918
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/278907
Tested-by: Service Cloud Jenkins <9144042a601061f88f1e1d7a1753ea3e2972119d@instructure.com>

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