update en-CA translation
update en-CA translation

Change-Id: Ia21f9f231d1c0343cd1d0036fe1ed1e0f5b9f25f
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/235900
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