tweak doc

FAQ.md

@@ -259,17 +259,8 @@ Now you can trace the info level log in logs/error.log.
 
 ## How to reload your own plugin
 
-The Apache APISIX plugin supports hot reloading. If your APISIX node has the Admin API turned on, then for scenarios such as adding / deleting / modifying plugins, you can hot reload the plugin by calling the HTTP interface without restarting the service.
-
-```shell
-curl http://127.0.0.1:9080/apisix/admin/plugins/reload -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT
-```
-
-If your APISIX node does not open the Admin API, then you can manually load the plug-in by reloading APISIX.
-
-```shell
-apisix reload
-```
+The Apache APISIX plugin supports hot reloading.
+See the `Hot reload` section in [plugins](./doc/plugins.md) for how to do that.
 
 ## How to make APISIX listen on multiple ports when handling HTTP or HTTPS requests?
 

FAQ_CN.md

@@ -209,17 +209,9 @@ Server: APISIX web server
 
 ## 如何加载自己编写的插件
 
-Apache APISIX 的插件支持热加载，如果你的 APISIX 节点打开了 Admin API，那么对于新增/删除/修改插件等场景，均可以通过调用 HTTP 接口的方式热加载插件，不需要重启服务。
+Apache APISIX 的插件支持热加载。
 
-```shell
-curl http://127.0.0.1:9080/apisix/admin/plugins/reload -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT
-```
-
-如果你的 APISIX 节点并没有打开 Admin API，那么你可以通过手动 reload APISIX 的方式加载插件。
-
-```shell
-apisix reload
-```
+具体怎么做参考 [插件](./doc/zh-cn/plugins.md) 中关于“热加载”的部分。
 
 ## 如何让 APISIX 在处理 HTTP 或 HTTPS 请求时监听多个端口
 

doc/plugins.md

@@ -23,7 +23,7 @@
 
 APISIX plug-ins are hot-loaded. No matter you add, delete or modify plug-ins, you don't need to restart the service.
 
-Just send an HTTP request through admin API:
+If your APISIX node has the Admin API turned on, just send an HTTP request through admin API:
 
 ```shell
 curl http://127.0.0.1:9080/apisix/admin/plugins/reload -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT