update nl translation
update nl translation

Change-Id: Ifad10d92a6d801d55ff506dc5e9ee29f7fb1c484
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/231636
Tested-by: Service Cloud Jenkins <9144042a601061f88f1e1d7a1753ea3e2972119d@instructure.com>

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