chore(doc): switch from gitter to github discussions

_config.icarus.yml

@@ -98,9 +98,9 @@ navbar:
         About: /about
     # Links to be shown on the right of the navigation bar
     links:
-        Join Gitter:
-            icon: fab fa-gitter
-            url: 'https://gitter.im/hexo-theme-icarus/community'
+        Discussion on GitHub:
+            icon: fas fa-comments
+            url: 'https://github.com/ppoffice/hexo-theme-icarus/discussions'
         Download on GitHub:
             icon: fab fa-github
             url: 'https://github.com/ppoffice/hexo-theme-icarus'
@@ -111,9 +111,9 @@ footer:
         Creative Commons:
             icon: fab fa-creative-commons
             url: 'https://creativecommons.org/'
-        Join Gitter:
-            icon: fab fa-gitter
-            url: 'https://gitter.im/hexo-theme-icarus/community'
+        Discussion on GitHub:
+            icon: fas fa-comments
+            url: 'https://github.com/ppoffice/hexo-theme-icarus/discussions'
         Download on GitHub:
             icon: fab fa-github
             url: 'https://github.com/ppoffice/hexo-theme-icarus'

source/_posts/en/FAQ.md

@@ -12,7 +12,7 @@ If your question is not answered here, you can also refer to
 [Icarus User Guide](/hexo-theme-icarus/tags/Icarus-User-Guide/), 
 [Hexo documentation](https://hexo.io/docs/index.html), and 
 [GitHub Issues](https://github.com/ppoffice/hexo-theme-icarus/issues?q=).
-Additionally, you may find help from other Icarus users on [Gitter](https://gitter.im/hexo-theme-icarus/).
+Additionally, you may find help from other Icarus users on [GitHub Discussions](https://github.com/ppoffice/hexo-theme-icarus/discussions).
 
 <!-- more -->
 

source/_posts/en/Getting-Started.md

@@ -98,7 +98,7 @@ To learn more about the theme, widgets, and plugins, check out the
 You can also refer to the source code of this site for more examples.
 It is in the [`site` branch](https://github.com/ppoffice/hexo-theme-icarus/tree/site) of the Icarus repository 
 on GitHub.
-Additionally, you may find help from other Icarus users on [Gitter](https://gitter.im/hexo-theme-icarus/).
+Additionally, you may find help from other Icarus users on [GitHub Discussions](https://github.com/ppoffice/hexo-theme-icarus/discussions).
 
 **Additional Resources**
 

source/_posts/zh-CN/FAQ.md

@@ -15,7 +15,7 @@ providers:
 [Icarus用户指南](/hexo-theme-icarus/tags/Icarus用户指南/)，
 [Hexo中文文档](https://hexo.io/zh-cn/docs/index.html)，
 以及[GitHub Issues](https://github.com/ppoffice/hexo-theme-icarus/issues?q=)。
-此外，你也可以在[Gitter](https://gitter.im/hexo-theme-icarus/)上向其他Icarus用户请求帮助。
+此外，你也可以在[GitHub讨论组](https://github.com/ppoffice/hexo-theme-icarus/discussions)上向其他Icarus用户请求帮助。
 
 <article class="message message-immersive is-primary">
 <div class="message-body">

source/_posts/zh-CN/Getting-Started.md

@@ -97,7 +97,7 @@ hexo server
 [Icarus用户指南](/hexo-theme-icarus/tags/Icarus用户指南/)。
 你也可以参考本站的源代码来获取更多的使用示例。
 本站源代码位于GitHub上Icarus代码仓库的[`site`分支](https://github.com/ppoffice/hexo-theme-icarus/tree/site)。
-此外，你也可能在[Gitter](https://gitter.im/hexo-theme-icarus/)上获得其他Icarus用户的帮助。
+此外，你也可能在[GitHub讨论组](https://github.com/ppoffice/hexo-theme-icarus/discussions)上获得其他Icarus用户的帮助。
 
 **额外资源**
 

source/about/index.md

@@ -7,7 +7,7 @@ toc: true
 <br>
 <a href="https://ppoffice.github.io/hexo-theme-icarus/">Preview</a> |
 <a href="https://ppoffice.github.io/hexo-theme-icarus/categories/">Documentation</a> |
-<a href="https://gitter.im/hexo-theme-icarus/community?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge">Chat on Gitter</a>
+<a href="https://github.com/ppoffice/hexo-theme-icarus/discussions">Discuss on GitHub</a>
 </p>
 
 ![](https://ppoffice.github.io/hexo-theme-icarus/gallery/preview.png?1 "Icarus Preview")