update ru translation
update ru translation

Change-Id: I4d92cd9d1a2691999d8878c611b92bbb1b89cd02
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/286140
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