update nl translation
update nl translation

Change-Id: Ia405e8df05a58be3aa7d7c4acf96b46e66c6d35d
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/258691
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