Translate plugins.md twice.
Translate plugins.md twice.

UniFreak/jekyllcn,LeuisKen/jekyllcn,xcatliu/jekyllcn,fengsmith/jekyllcn,honger05/jekyllcn,penchan1218/jekyllcn,penchan1218/jekyllcn,penchan1218/jekyllcn,UniFreak/jekyllcn,fengsmith/jekyllcn,zhangkuaiji/jekyllcn,LeuisKen/jekyllcn,fengsmith/jekyllcn,zhangkuaiji/jekyllcn,xcatliu/jekyllcn,zhangkuaiji/jekyllcn,UniFreak/jekyllcn,xcatliu/jekyllcn,honger05/jekyllcn,xcatliu/jekyllcn,honger05/jekyllcn,LeuisKen/jekyllcn