update ru translation
update ru translation

Change-Id: Ib912d8f9fd047b363d7b897fbecb2690e40c17e2
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/300616
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