Update README.md

Author: Snailclimb

README.md

@@ -43,13 +43,14 @@ Github用户如果访问速度缓慢的话，可以转移到[码云](https://git
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-        <a href="https://wx.kaikeba.com/vip_course/ijd2ajz1k9/09vvaf10hf?tenant=wx5046bc7413796142" target="_blank">
+        <a href="https://mp.weixin.qq.com/s/uXgGt66Df3JC4GM7d0LlZg" target="_blank">
           <img src="https://imgkr.cn-bj.ufileos.com/75fef802-16f0-4e0b-9d6f-a9173f24a40f.png" style="margin: 0 auto;width:400px" /></a>
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 ## 目录
 
 - [Java](#java)