Update docs

README-zh.md

@@ -10,7 +10,7 @@ IPsec VPN 可以加密你的网络流量，以防止在通过因特网传送时
 
 我们将使用 [Libreswan](https://libreswan.org/) 作为 IPsec 服务器，以及 [xl2tpd](https://github.com/xelerance/xl2tpd) 作为 L2TP 提供者。
 
-**[» 电子书：搭建自己的 IPsec VPN, OpenVPN 和 WireGuard 服务器](https://mybook.to/vpnzhs)**
+**[» :book: 电子书：搭建自己的 IPsec VPN, OpenVPN 和 WireGuard 服务器](https://mybook.to/vpnzhs)**
 
 ## 快速开始
 

README.md

@@ -10,7 +10,7 @@ An IPsec VPN encrypts your network traffic, so that nobody between you and the V
 
 We will use [Libreswan](https://libreswan.org/) as the IPsec server, and [xl2tpd](https://github.com/xelerance/xl2tpd) as the L2TP provider.
 
-**[» eBook: Set Up Your Own IPsec VPN, OpenVPN and WireGuard Server](https://mybook.to/vpn)**
+**[» :book: Book: Set Up Your Own IPsec VPN, OpenVPN and WireGuard Server](https://mybook.to/vpn)**
 
 ## Quick start
 
@@ -266,7 +266,7 @@ Get your computer or device to use the VPN. Please refer to:
 
 **[Configure IPsec/XAuth ("Cisco IPsec") VPN Clients](docs/clients-xauth.md)**
 
-**[:book: eBook: Set Up Your Own IPsec VPN, OpenVPN and WireGuard Server](https://mybook.to/vpn)**
+**[:book: Book: Set Up Your Own IPsec VPN, OpenVPN and WireGuard Server](https://mybook.to/vpn)**
 
 Enjoy your very own VPN! :sparkles::tada::rocket::sparkles:
 

docs/ikev2-howto.md

@@ -149,7 +149,7 @@ To connect to the VPN:
 1. Check the **Show VPN status in menu bar** checkbox.
 1. Click **Connect**.
 
-(Optional feature) Enable **VPN On Demand** to automatically start a VPN connection when your Mac is on Wi-Fi. To enable, check the **Connect on demand** checkbox for the VPN connection, and click **Apply**. You can customize VPN On Demand rules to exclude certain Wi-Fi network(s) such as your home network. See "Guide: Customize IKEv2 VPN On Demand rules for macOS and iOS" in [:book: eBook: Set Up Your Own IPsec VPN, OpenVPN and WireGuard Server](https://mybook.to/vpn).
+(Optional feature) Enable **VPN On Demand** to automatically start a VPN connection when your Mac is on Wi-Fi. To enable, check the **Connect on demand** checkbox for the VPN connection, and click **Apply**. You can customize VPN On Demand rules to exclude certain Wi-Fi network(s) such as your home network. See "Guide: Customize IKEv2 VPN On Demand rules for macOS and iOS" in [:book: Book: Set Up Your Own IPsec VPN, OpenVPN and WireGuard Server](https://mybook.to/vpn).
 
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@@ -209,7 +209,7 @@ To connect to the VPN:
 1. Go to Settings -> VPN. Select the VPN connection with `Your VPN Server IP` (or DNS name).
 1. Slide the **VPN** switch ON.
 
-(Optional feature) Enable **VPN On Demand** to automatically start a VPN connection when your iOS device is on Wi-Fi. To enable, tap the "i" icon on the right of the VPN connection, and enable **Connect On Demand**. You can customize VPN On Demand rules to exclude certain Wi-Fi network(s) such as your home network, or to start the VPN connection both on Wi-Fi and cellular. See "Guide: Customize IKEv2 VPN On Demand rules for macOS and iOS" in [:book: eBook: Set Up Your Own IPsec VPN, OpenVPN and WireGuard Server](https://mybook.to/vpn).
+(Optional feature) Enable **VPN On Demand** to automatically start a VPN connection when your iOS device is on Wi-Fi. To enable, tap the "i" icon on the right of the VPN connection, and enable **Connect On Demand**. You can customize VPN On Demand rules to exclude certain Wi-Fi network(s) such as your home network, or to start the VPN connection both on Wi-Fi and cellular. See "Guide: Customize IKEv2 VPN On Demand rules for macOS and iOS" in [:book: Book: Set Up Your Own IPsec VPN, OpenVPN and WireGuard Server](https://mybook.to/vpn).
 
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