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

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

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