Update index.html

Author: riverfor

qpython-docs/index.html

@@ -157,6 +157,7 @@ <h4><img src="static/ic_support@2x.png" width="19px"> Community & Feedback</h4>
 
 							- <a href="https://www.qpython.com.cn/qpy-forum/" target="_blank">加入中文交流社区</a> <br />
 							- <a href="https://discord.gg/hV2chuD" target="_blank">Join QPython Discord</a> <br />
+							- <a href="https://groups.google.com/g/qpython" target="_blank">Subscribe the QPython Newsletter</a> <br />
 
                             <p>We recommend that you contact us and provide feedback through the QPython community, which is a relatively convenient way. Of course, you can also share your feedback with us through the following channels.</p>
 							- <a target="_blank" href='https://github.com/qpython-android/qpython/issues'>Report App's Issue</a> <br />