update ru translation
update ru translation

Change-Id: Ida4c28ef32b6a01cd104e47dc6c80905a43f27c0
Reviewed-on: https://gerrit.instructure.com/212851
Tested-by: Jenkins

sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,instructure/canvas-lms,sfu/canvas-lms,instructure/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,djbender/canvas-lms,djbender/canvas-lms,instructure/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,sfu/canvas-lms