Pontoon: Update Polish (pl) localization of MDN
Pontoon: Update Polish (pl) localization of MDN

Localization authors:
- Piotr Drąg <piotrdrag@gmail.com>

mozilla/kuma,Elchi3/kuma,mozilla/kuma,a2sheppy/kuma,mozilla/kuma,a2sheppy/kuma,Elchi3/kuma,a2sheppy/kuma,mozilla/kuma,jwhitlock/kuma,Elchi3/kuma,SphinxKnight/kuma,mozilla/kuma,jwhitlock/kuma,jwhitlock/kuma,escattone/kuma,a2sheppy/kuma,SphinxKnight/kuma,SphinxKnight/kuma,Elchi3/kuma,SphinxKnight/kuma,jwhitlock/kuma,escattone/kuma,jwhitlock/kuma,escattone/kuma,SphinxKnight/kuma,Elchi3/kuma,a2sheppy/kuma,SphinxKnight/kuma