Pontoon: Update Czech (cs) localization of MDN
Pontoon: Update Czech (cs) localization of MDN

Localization authors:
- Michal Stanke <mstanke@mozilla.cz>

safwanrahman/kuma,ollie314/kuma,a2sheppy/kuma,ollie314/kuma,SphinxKnight/kuma,jwhitlock/kuma,a2sheppy/kuma,escattone/kuma,mozilla/kuma,jwhitlock/kuma,jwhitlock/kuma,SphinxKnight/kuma,yfdyh000/kuma,Elchi3/kuma,escattone/kuma,escattone/kuma,Elchi3/kuma,yfdyh000/kuma,Elchi3/kuma,yfdyh000/kuma,safwanrahman/kuma,ollie314/kuma,a2sheppy/kuma,mozilla/kuma,safwanrahman/kuma,mozilla/kuma,ollie314/kuma,SphinxKnight/kuma,safwanrahman/kuma,SphinxKnight/kuma,safwanrahman/kuma,SphinxKnight/kuma,mozilla/kuma,a2sheppy/kuma,yfdyh000/kuma,jwhitlock/kuma,jwhitlock/kuma,yfdyh000/kuma,ollie314/kuma,safwanrahman/kuma,a2sheppy/kuma,ollie314/kuma,SphinxKnight/kuma,Elchi3/kuma,yfdyh000/kuma,Elchi3/kuma,mozilla/kuma