Update courses.html

Author: riverfor

docs/courses.html

@@ -18,7 +18,7 @@ <h3>Featured courses</h3>
    <h3>More resources</h3>
      <p>For general user to discuss Python learning: <a href='#' onclick='milib.openUrl("https://www.facebook.com/groups/qpython")'>Join the QPython facebook group</a></p>
      <p>For contributor to report issue or contribute: <a href='#' onclick='milib.openUrl("https://join.slack.com/t/qpython/shared_invite/zt-bsyw9868-nNJyJP_3IHABVtIk3BK5SA")'>Join the QPython Slack</a></p>
-     <p>For all users: <a href='#' onclick='milib.openUrl("https://discord.gg/58eBWUgF")'>Join the QPython Discord</a></p>
+     <p>For all users: <a href='#' onclick='milib.openUrl("https://discord.gg/hV2chuD")'>Join the QPython Discord</a></p>
 
      <p>If you use vscode development daily, I will highly recommend <a href='#' onclick='milib.openUrl("https://marketplace.visualstudio.com/items?itemName=SimaChat.g-sima-chat-vscode")'>Sima.ChatGPT AI Programming Assistant</a> for you, which is a great AI assistant</p>