Update courses-cn.html

Author: riverfor

docs/courses-cn.html

@@ -19,21 +19,21 @@
             </a>
             <!-- Image 2 -->
             <a href="#" onclick="milib.openUrl('https://www.bilibili.com/video/BV1bw4m1C7bP/')" class="block bg-white rounded-lg shadow-lg overflow-hidden">
-                <img src="https://mmbiz.qpic.cn/sz_mmbiz_png/N6lkSsveXsuJPDjaNVum0LwlY8aic7JHQAJDzghxfdfsuuIlJTZEyF9kSnwIytdJHa2tsNibiaKsO7UwkWjklyt5w/640?wx_fmt=png&from=appmsg" alt="QPython起源" class="w-full">
+                <img src="https://edu.qpython.org/static/qiyuan.png" alt="QPython起源" class="w-full">
                 <div class="p-4">
                     <h2 class="text-xl font-bold text-center">QPython起源</h2>
                 </div>
             </a>
             <a href="#" onclick="milib.openUrl('https://www.bilibili.com/video/BV1Gi9iYYE6b/')" class="block bg-white rounded-lg shadow-lg overflow-hidden">
-                <img src="https://mmbiz.qpic.cn/mmbiz_png/IvlR5qib6qwZibcx9BybMBN3ZlcSBkdVfHvdDiaf5cKUVUSydAX5icicibaRFw9LfREiaiba72UMJZ0SOq23yHEm8rr3RA/640?wx_fmt=png&from=appmsg" alt="QPython使用介绍" class="w-full">
+                <img src="https://edu.qpython.org/static/shiyong.png" alt="QPython使用介绍" class="w-full">
                 <div class="p-4">
                     <h2 class="text-xl font-bold text-center">QPython使用介绍</h2>
                 </div>
             </a>
 
             <!-- Image 3 -->
             <a href="#" onclick="milib.openUrl('https://mp.weixin.qq.com/s/UVpkhDtnL-00CpgS11PkWg')" class="block bg-white rounded-lg shadow-lg overflow-hidden">
-                <img src="https://mmbiz.qpic.cn/sz_mmbiz_png/N6lkSsveXstI74vaaVywicqzUU7nK8srqDxjqO7ClDOtXTRk2aHiaHqBUMd8Ffa0RicaJytZicySY9jdTPUuGXfcBA/640?wx_fmt=png&from=appmsg" alt="QPython知识星球" class="w-full">
+                <img src="https://edu.qpython.org/static/xingqiu.png" alt="QPython知识星球" class="w-full">
                 <div class="p-4">
                     <h2 class="text-xl font-bold text-center">QPython知识星球</h2>
                 </div>