Pontoon: Update Slovenian (sl) localization of AMO Linter
Pontoon: Update Slovenian (sl) localization of AMO Linter

Localization authors:
- Rok Žerdin <rok.zerdin1990@gmail.com>
- Lan Glad <upwinxp@gmail.com>
- Peter Klofutar <peter_klofutar@telemach.net>

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