update README.md.

Signed-off-by: Binary Wang <5303+binary@user.noreply.gitee.com>

README.md

@@ -31,7 +31,7 @@
   <tr>
     <td align="left" valign="middle">
       <a href="http://mp.weixin.qq.com/mp/homepage?__biz=MzI3MzAwMzk4OA==&hid=1&sn=f31af3bf562b116b061c9ab4edf70b61&scene=18#wechat_redirect" target="_blank">
-        <img height="120" src="https://gitee.com/binary/weixin-java-tools/raw/main/qrcodes/mp.png" alt="mp qrcode">
+        <img height="120" src="https://gitee.com/binary/weixin-java-tools/raw/develop/images/qrcodes/mp.png" alt="mp qrcode">
       </a>
     </td>
     <td valign="middle">
@@ -41,7 +41,7 @@
     </td>
     <td align="right" valign="middle">
       <a href="https://promotion.aliyun.com/ntms/act/qwbk.html?userCode=7makzf5h" target="_blank">
-        <img height="120" src="https://gitee.com/binary/weixin-java-tools/raw/main/banners/aliyun.jpg" alt="aliyun ad">
+        <img height="120" src="https://gitee.com/binary/weixin-java-tools/raw/develop/images/banners/aliyun.jpg" alt="aliyun ad">
       </a>
     </td>
   </tr>