chore: prettier all demos

src/picker/demo/index.vue

@@ -5,7 +5,11 @@
     </demo-block>
 
     <demo-block :title="$t('defaultIndex')">
-      <van-picker :columns="$t('column1')" :default-index="2" @change="onChange1" />
+      <van-picker
+        :columns="$t('column1')"
+        :default-index="2"
+        @change="onChange1"
+      />
     </demo-block>
 
     <demo-block :title="$t('title3')">
@@ -63,7 +67,11 @@ export default {
       withPopup: '搭配弹出层使用',
       chooseCity: '选择城市',
       column1: ['杭州', '宁波', '温州', '嘉兴', '湖州'],
-      column2: [{ text: '杭州', disabled: true }, { text: '宁波' }, { text: '温州' }],
+      column2: [
+        { text: '杭州', disabled: true },
+        { text: '宁波' },
+        { text: '温州' },
+      ],
       column3: {
         浙江: ['杭州', '宁波', '温州', '嘉兴', '湖州'],
         福建: ['福州', '厦门', '莆田', '三明', '泉州'],