update ru translation
update ru translation

Change-Id: I44bc484e6101249dd003bcb0beb3e05027fa5537
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/302896
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