docs: improve clarity for ext-plugin-post-resp plugin (#10972)

docs/en/latest/plugins/ext-plugin-post-resp.md

@@ -33,12 +33,7 @@ The `ext-plugin-post-resp` Plugin is for running specific external Plugins in th
 
 The `ext-plugin-post-resp` plugin will be executed after the request gets a response from the upstream.
 
-After enabling this plugin, APISIX will use the [lua-resty-http](https://github.com/api7/lua-resty-http) library to make requests to the upstream, this results in:
-
-- [proxy-control](./proxy-control.md) plugin is not available
-- [proxy-mirror](./proxy-mirror.md) plugin is not available
-- [proxy-cache](./proxy-cache.md) plugin is not available
-- [mTLS Between APISIX and Upstream](../mtls.md#mtls-between-apisix-and-upstream) function is not available yet
+This plugin uses [lua-resty-http](https://github.com/api7/lua-resty-http) library under the hood to send requests to the upstream, due to which the [proxy-control](./proxy-control.md), [proxy-mirror](./proxy-mirror.md), and [proxy-cache](./proxy-cache.md) plugins are not available to be used alongside this plugin. Also, [mTLS Between APISIX and Upstream](../mtls.md#mtls-between-apisix-and-upstream) is not yet supported.
 
 See [External Plugin](../external-plugin.md) to learn more.