docs: fix wrong vant link

Author: Amour1688

README-zh_CN.md

@@ -174,7 +174,7 @@ const App = {
         </a>
       </td>
       <td align="center">
-        <a target="_blank" href="https://youzan.github.io/">
+        <a target="_blank" href="https://youzan.github.io/vant/#/zh-CN/">
           <img
             width="32"
             style="vertical-align: -0.32em; margin-right: 8px;"

README.md

@@ -175,7 +175,7 @@ Why Not props ?
         </a>
       </td>
       <td align="center">
-        <a target="_blank" href="https://youzan.github.io/">
+        <a target="_blank" href="https://youzan.github.io/vant/#/zh-CN/">
           <img
             width="32"
             style="vertical-align: -0.32em; margin-right: 8px;"