Update general.md (#681)

添加RedisMQ扩展

docs/content/user-guide/zh/storage/general.md

@@ -75,3 +75,5 @@ CallbackName |	回调的订阅者名称 | string
 * SQLite & Oracle ([@cocosip](https://github.com/cocosip)) ：https://github.com/cocosip/CAP-Extensions   
 
 * SmartSql ([@xiangxiren](https://github.com/xiangxiren)) ：https://github.com/xiangxiren/SmartSql.CAP   
+
+* RedisMQ ([@木木](https://github.com/difuteam)) ：https://github.com/difudotnet/CAP.RedisMQ.Extensions