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

Localization authors:
- Bjørn I. <bjorn.svindseth@online.no>

mozilla/addons-linter,mozilla/addons-linter,mozilla/addons-validator