update nn translation
update nn translation

Change-Id: I12f0f747979a159428e46b027a5a7f8d87a7eb54
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/216595
Tested-by: Jenkins

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