update ru translation
update ru translation

Change-Id: Ie97f1e8ef126fb0223c66d3c86f99b97f282fc27
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/304908
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