Update docs

README-zh.md

@@ -201,15 +201,13 @@ docker cp ipsec-vpn-server:/etc/ipsec.d/vpn-gen.env ./
 
 **[配置 IPsec/XAuth ("Cisco IPsec") VPN 客户端](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/clients-xauth-zh.md)**
 
-如果在连接过程中遇到错误，请参见 [故障排除](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/clients-zh.md#故障排除)。
-
 开始使用自己的专属 VPN! :sparkles::tada::rocket::sparkles:
 
 如果你喜欢这个项目，可以 [表达你的支持或感谢](https://coindrop.to/hwdsl2)。
 
-## 重要提示
+<a href="https://coindrop.to/hwdsl2" target="_blank"><img src="docs/images/embed-button.png" height="38" width="153" alt="Coindrop.to me"></img></a>
 
-*其他语言版本: [English](README.md#important-notes), [中文](README-zh.md#重要提示)。*
+## 重要提示
 
 **Windows 用户** 对于 IPsec/L2TP 模式，在首次连接之前需要 [修改注册表](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/clients-zh.md#windows-错误-809)，以解决 VPN 服务器或客户端与 NAT（比如家用路由器）的兼容问题。
 
@@ -239,8 +237,6 @@ Status: Image is up to date for hwdsl2/ipsec-vpn-server:latest
 
 ## 配置并使用 IKEv2 VPN
 
-*其他语言版本: [English](README.md#configure-and-use-ikev2-vpn), [中文](README-zh.md#配置并使用-ikev2-vpn)。*
-
 IKEv2 模式是比 IPsec/L2TP 和 IPsec/XAuth ("Cisco IPsec") 更佳的连接模式，该模式无需 IPsec PSK, 用户名或密码。更多信息请看[这里](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/ikev2-howto-zh.md)。
 
 首先，查看容器的日志以获取 IKEv2 配置信息：

README.md

@@ -201,15 +201,13 @@ Get your computer or device to use the VPN. Please refer to:
 
 **[Configure IPsec/XAuth ("Cisco IPsec") VPN Clients](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/clients-xauth.md)**
 
-If you get an error when trying to connect, see [Troubleshooting](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/clients.md#troubleshooting).
-
 Enjoy your very own VPN! :sparkles::tada::rocket::sparkles:
 
 Like this project? You can [show your support or appreciation](https://coindrop.to/hwdsl2).
 
-## Important notes
+<a href="https://coindrop.to/hwdsl2" target="_blank"><img src="docs/images/embed-button.png" height="38" width="153" alt="Coindrop.to me"></img></a>
 
-*Read this in other languages: [English](README.md#important-notes), [中文](README-zh.md#重要提示).*
+## Important notes
 
 **Windows users**: For IPsec/L2TP mode, a [one-time registry change](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/clients.md#windows-error-809) is required if the VPN server or client is behind NAT (e.g. home router).
 
@@ -239,8 +237,6 @@ Otherwise, it will download the latest version. To update your Docker container,
 
 ## Configure and use IKEv2 VPN
 
-*Read this in other languages: [English](README.md#configure-and-use-ikev2-vpn), [中文](README-zh.md#配置并使用-ikev2-vpn).*
-
 IKEv2 mode has improvements over IPsec/L2TP and IPsec/XAuth ("Cisco IPsec"), and does not require an IPsec PSK, username or password. Read more [here](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/ikev2-howto.md).
 
 First, check container logs to view details for IKEv2: