Pontoon: Update Norwegian Nynorsk (nn-NO) localization of AMO Frontend
Pontoon: Update Norwegian Nynorsk (nn-NO) localization of AMO Frontend

Co-authored-by: Bjørn I. <26ddea993d39b10a774bff6f687bd03c676ba168@yahoo.com>

mozilla/addons-frontend,mozilla/addons-frontend,mozilla/addons-frontend,mozilla/addons-frontend