update ru translation
update ru translation

Change-Id: Ia9cab0e77646458451d4f33a42b5d4298fdda0e4
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/303894
Tested-by: Service Cloud Jenkins <9144042a601061f88f1e1d7a1753ea3e2972119d@instructure.com>

instructure/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,instructure/canvas-lms