Update docs

README-zh.md

@@ -261,7 +261,12 @@ docker exec -it ipsec-vpn-server ls -l /etc/ipsec.d
 docker cp ipsec-vpn-server:/etc/ipsec.d/vpnclient.p12 ./
 ```
 
-然后你可以 [配置 IKEv2 VPN 客户端](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/ikev2-howto-zh.md#配置-ikev2-vpn-客户端)。
+**下一步：** [配置你的设备](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/ikev2-howto-zh.md#配置-ikev2-vpn-客户端) 以使用 IKEv2 VPN。
+
+<details>
+<summary>
+了解如何管理 IKEv2 客户端。
+</summary>
 
 你可以使用辅助脚本管理 IKEv2 客户端。示例如下。如需自定义客户端选项，可以在不添加参数的情况下运行脚本。
 
@@ -277,6 +282,18 @@ docker exec -it ipsec-vpn-server ikev2.sh -h
 ```
 
 **注：** 如果你遇到错误 "executable file not found"，将上面的 `ikev2.sh` 换成 `/opt/src/ikev2.sh`。
+</details>
+<details>
+<summary>
+了解如何更改 IKEv2 服务器地址。
+</summary>
+
+在某些情况下，你可能需要更改 IKEv2 服务器地址。例如切换为使用域名，或者在服务器的 IP 更改之后。要更改 IKEv2 服务器地址，首先[在容器中运行 Bash shell](docs/advanced-usage-zh.md#在容器中运行-bash-shell)，然后[按照这里的说明操作](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/ikev2-howto-zh.md#更改-ikev2-服务器地址)。
+</details>
+<details>
+<summary>
+移除 IKEv2 并使用自定义选项重新配置。
+</summary>
 
 在某些情况下，你可能需要移除 IKEv2 并使用自定义选项重新配置它。这可以使用辅助脚本来完成。请注意，这将覆盖你在 `env` 文件中指定的变量，例如 `VPN_DNS_NAME` 和 `VPN_CLIENT_NAME`，并且容器的日志将不再显示 IKEv2 的最新信息。
 
@@ -288,6 +305,7 @@ docker exec -it ipsec-vpn-server ikev2.sh --removeikev2
 # 使用自定义选项重新配置 IKEv2
 docker exec -it ipsec-vpn-server ikev2.sh
 ```
+</details>
 
 ## 高级用法
 

README.md

@@ -262,7 +262,12 @@ docker exec -it ipsec-vpn-server ls -l /etc/ipsec.d
 docker cp ipsec-vpn-server:/etc/ipsec.d/vpnclient.p12 ./
 ```
 
-After that, you may [configure IKEv2 VPN clients](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/ikev2-howto.md#configure-ikev2-vpn-clients).
+**Next steps:** [Configure your devices](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/ikev2-howto.md#configure-ikev2-vpn-clients) to use the IKEv2 VPN.
+
+<details>
+<summary>
+Learn how to manage IKEv2 clients.
+</summary>
 
 You can manage IKEv2 clients using the helper script. See examples below. To customize client options, run the script without arguments.
 
@@ -278,6 +283,18 @@ docker exec -it ipsec-vpn-server ikev2.sh -h
 ```
 
 **Note:** If you encounter error "executable file not found", replace `ikev2.sh` above with `/opt/src/ikev2.sh`.
+</details>
+<details>
+<summary>
+Learn how to change the IKEv2 server address.
+</summary>
+
+In certain circumstances, you may need to change the IKEv2 server address. For example, to switch to use a DNS name, or after server IP changes. To change the IKEv2 server address, first [open a bash shell inside the container](docs/advanced-usage.md#bash-shell-inside-container), then [follow these instructions](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/ikev2-howto.md#change-ikev2-server-address).
+</details>
+<details>
+<summary>
+Remove IKEv2 and set it up again using custom options.
+</summary>
 
 In certain circumstances, you may need to remove IKEv2 and set it up again using custom options. This can be done using the helper script. Note that this will override variables you specified in the `env` file, such as `VPN_DNS_NAME` and `VPN_CLIENT_NAME`, and the container logs will no longer show up-to-date information for IKEv2.
 
@@ -289,6 +306,7 @@ docker exec -it ipsec-vpn-server ikev2.sh --removeikev2
 # Set up IKEv2 again using custom options
 docker exec -it ipsec-vpn-server ikev2.sh
 ```
+</details>
 
 ## Advanced usage