Pontoon: Update Chinese (zh-CN) localization of MDN
Pontoon: Update Chinese (zh-CN) localization of MDN

Localization authors:
- YFdyh000 <yfdyh000@gmail.com>

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