Update docs

README-zh.md

@@ -84,10 +84,10 @@ https://gitlab.com/hwdsl2/setup-ipsec-vpn/-/raw/master/vpnsetup.sh
 其他受支持的 Linux 发行版。
 </summary>
 
-- Raspberry Pi OS (Raspbian) 11 或者 10
+- Raspberry Pi OS (Raspbian)
 - Kali Linux
-- Alpine Linux 3.17 或者 3.16
-- Red Hat Enterprise Linux (RHEL) 9, 8 或者 7
+- Alpine Linux
+- Red Hat Enterprise Linux (RHEL)
 </details>
 
 这也包括公共云服务中的 Linux 虚拟机，例如 [DigitalOcean](https://blog.ls20.com/digitalocean), [Vultr](https://blog.ls20.com/vultr), [Linode](https://blog.ls20.com/linode), [OVH](https://www.ovhcloud.com/en/vps/) 和 [Microsoft Azure](https://azure.microsoft.com)。公共云用户也可以使用[用户数据](https://blog.ls20.com/ipsec-l2tp-vpn-auto-setup-for-ubuntu-12-04-on-amazon-ec2/#vpnsetup)部署。
@@ -266,12 +266,10 @@ sudo ikev2.sh
 
 **[配置 IPsec/XAuth ("Cisco IPsec") VPN 客户端](docs/clients-xauth-zh.md)**
 
-**[:book: Book: 搭建自己的 IPsec VPN, OpenVPN 和 WireGuard 服务器](https://books2read.com/vpnzh)**
+**阅读 [:book: VPN book](https://books2read.com/vpnzh) 以访问 [额外内容](https://ko-fi.com/post/Support-this-project-and-get-access-to-supporter-o-X8X5FVFZC)。**
 
 开始使用自己的专属 VPN! :sparkles::tada::rocket::sparkles:
 
-喜欢这个项目？[:heart: 赞助](https://github.com/sponsors/hwdsl2?metadata_o=iz) 或 [:coffee: 支持](https://ko-fi.com/hwdsl2) 并访问 [额外内容](https://ko-fi.com/post/Support-this-project-and-get-access-to-supporter-o-X8X5FVFZC)。
-
 ## 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](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。

README.md

@@ -84,10 +84,10 @@ A cloud server, virtual private server (VPS) or dedicated server, with an instal
 Other supported Linux distributions.
 </summary>
 
-- Raspberry Pi OS (Raspbian) 11 or 10
+- Raspberry Pi OS (Raspbian)
 - Kali Linux
-- Alpine Linux 3.17 or 3.16
-- Red Hat Enterprise Linux (RHEL) 9, 8 or 7
+- Alpine Linux
+- Red Hat Enterprise Linux (RHEL)
 </details>
 
 This also includes Linux VMs in public clouds, such as [DigitalOcean](https://blog.ls20.com/digitalocean), [Vultr](https://blog.ls20.com/vultr), [Linode](https://blog.ls20.com/linode), [OVH](https://www.ovhcloud.com/en/vps/) and [Microsoft Azure](https://azure.microsoft.com). Public cloud users can also deploy using [user data](https://blog.ls20.com/ipsec-l2tp-vpn-auto-setup-for-ubuntu-12-04-on-amazon-ec2/#vpnsetup).
@@ -266,12 +266,10 @@ Get your computer or device to use the VPN. Please refer to:
 
 **[Configure IPsec/XAuth ("Cisco IPsec") VPN Clients](docs/clients-xauth.md)**
 
-**[:book: Book: Set Up Your Own IPsec VPN, OpenVPN and WireGuard Server](https://books2read.com/vpn)**
+**Read [:book: VPN book](https://books2read.com/vpn) to access [extra content](https://ko-fi.com/post/Support-this-project-and-get-access-to-supporter-o-O5O7FVF8J).**
 
 Enjoy your very own VPN! :sparkles::tada::rocket::sparkles:
 
-Like this project? [:heart: Sponsor](https://github.com/sponsors/hwdsl2?metadata_o=i) or [:coffee: Support](https://ko-fi.com/hwdsl2) and access [extra content](https://ko-fi.com/post/Support-this-project-and-get-access-to-supporter-o-O5O7FVF8J).
-
 ## Important notes
 
 **Windows users**: For IPsec/L2TP mode, a [one-time registry change](docs/clients.md#windows-error-809) is required if the VPN server or client is behind NAT (e.g. home router).

docs/ikev2-howto-zh.md

@@ -40,6 +40,8 @@ Libreswan 支持通过使用 RSA 签名算法的 X.509 Machine Certificates 来
 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。要了解更多信息，参见 [这一小节](#更改-ikev2-服务器地址)。
 </details>
 
+**阅读 [:book: VPN book](https://books2read.com/vpnzh) 以访问 [额外内容](https://ko-fi.com/post/Support-this-project-and-get-access-to-supporter-o-X8X5FVFZC)。**
+
 ### Windows 7, 8, 10 和 11
 
 #### 自动导入配置

docs/ikev2-howto.md

@@ -40,6 +40,8 @@ Learn how to change the IKEv2 server address.
 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. Learn more in [this section](#change-ikev2-server-address).
 </details>
 
+**Read [:book: VPN book](https://books2read.com/vpn) to access [extra content](https://ko-fi.com/post/Support-this-project-and-get-access-to-supporter-o-O5O7FVF8J).**
+
 ### Windows 7, 8, 10 and 11
 
 #### Auto-import configuration