update nl translation
update nl translation

Change-Id: I457519f385d4a78aacb567a6d11ab11e2edb7612
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/299819
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