Update docs

- Closes #905

README-zh.md

@@ -334,5 +334,6 @@ wget https://git.io/vpnupgrade-amzn -O vpnupgrade.sh && sudo sh vpnupgrade.sh
 版权所有 (C) 2014-2021 <a href="https://www.linkedin.com/in/linsongui" target="_blank">Lin Song</a> <a href="https://www.linkedin.com/in/linsongui" target="_blank"><img src="https://static.licdn.com/scds/common/u/img/webpromo/btn_viewmy_160x25.png" width="160" height="25" border="0" alt="View my profile on LinkedIn"></a>   
 基于 <a href="https://github.com/sarfata/voodooprivacy" target="_blank">Thomas Sarlandie 的工作</a> (版权所有 2012)
 
+<a rel="license" href="http://creativecommons.org/licenses/by-sa/3.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by-sa/3.0/88x31.png" /></a>   
 这个项目是以 <a href="http://creativecommons.org/licenses/by-sa/3.0/" target="_blank">知识共享署名-相同方式共享3.0</a> 许可协议授权。   
 必须署名： 请包括我的名字在任何衍生产品，并且让我知道你是如何改善它的！

README.md

@@ -334,5 +334,6 @@ See <a href="docs/uninstall.md" target="_blank">Uninstall the VPN</a>.
 Copyright (C) 2014-2021 <a href="https://www.linkedin.com/in/linsongui" target="_blank">Lin Song</a> <a href="https://www.linkedin.com/in/linsongui" target="_blank"><img src="https://static.licdn.com/scds/common/u/img/webpromo/btn_viewmy_160x25.png" width="160" height="25" border="0" alt="View my profile on LinkedIn"></a>   
 Based on <a href="https://github.com/sarfata/voodooprivacy" target="_blank">the work of Thomas Sarlandie</a> (Copyright 2012)
 
+<a rel="license" href="http://creativecommons.org/licenses/by-sa/3.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by-sa/3.0/88x31.png" /></a>   
 This work is licensed under the <a href="http://creativecommons.org/licenses/by-sa/3.0/" target="_blank">Creative Commons Attribution-ShareAlike 3.0 Unported License</a>  
 Attribution required: please include my name in any derivative and let me know how you have improved it!