docs: revert cdn URL (#8310)

src/uploader/README.zh-CN.md

@@ -53,7 +53,7 @@ import { ref } from 'vue';
 export default {
   setup() {
     const fileList = ref([
-      { url: 'https://img01.yzcdn.cn/vant/leaf.jpg' },
+      { url: 'https://img.yzcdn.cn/vant/leaf.jpg' },
       // Uploader 根据文件后缀来判断是否为图片文件
       // 如果图片 URL 中不包含类型信息，可以添加 isImage 标记来声明
       { url: 'https://cloud-image', isImage: true },
@@ -81,12 +81,12 @@ export default {
   setup() {
     const fileList = ref([
       {
-        url: 'https://img01.yzcdn.cn/vant/leaf.jpg',
+        url: 'https://img.yzcdn.cn/vant/leaf.jpg',
         status: 'uploading',
         message: '上传中...',
       },
       {
-        url: 'https://img01.yzcdn.cn/vant/tree.jpg',
+        url: 'https://img.yzcdn.cn/vant/tree.jpg',
         status: 'failed',
         message: '上传失败',
       },
@@ -261,16 +261,16 @@ import { Toast } from 'vant';
 export default {
   setup() {
     const fileList = ref([
-      { url: 'https://img01.yzcdn.cn/vant/leaf.jpg' },
+      { url: 'https://img.yzcdn.cn/vant/leaf.jpg' },
       {
-        url: 'https://img01.yzcdn.cn/vant/sand.jpg',
+        url: 'https://img.yzcdn.cn/vant/sand.jpg',
         deletable: true,
         beforeDelete: () => {
           Toast('自定义单个预览图片的事件和样式');
         },
       },
       {
-        url: 'https://img01.yzcdn.cn/vant/tree.jpg',
+        url: 'https://img.yzcdn.cn/vant/tree.jpg',
         deletable: true,
         imageFit: 'contain',
         previewSize: 120,