update nl translation
update nl translation

Change-Id: Ie3f4c9d05ecf60bd8ec0931654aa6b4c6b3e5b84
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/215730
Tested-by: Jenkins

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