chore: prettier all demos

src/uploader/demo/index.vue

@@ -14,7 +14,9 @@
 
     <demo-block :title="$t('uploadStyle')">
       <van-uploader>
-        <van-button type="primary" icon="photo">{{ this.$t('upload') }}</van-button>
+        <van-button type="primary" icon="photo">
+          {{ this.$t('upload') }}
+        </van-button>
       </van-uploader>
     </demo-block>
 

src/uploader/test/__snapshots__/demo.spec.js.snap

@@ -51,7 +51,9 @@ exports[`renders demo correctly 1`] = `
     <div class="van-uploader">
       <div class="van-uploader__wrapper">
         <div class="van-uploader__input-wrapper"><button class="van-button van-button--primary van-button--normal"><i class="van-icon van-icon-photo van-button__icon">
-              <!----></i><span class="van-button__text">上传文件</span></button><input type="file" accept="image/*" class="van-uploader__input"></div>
+              <!----></i><span class="van-button__text">
+        上传文件
+      </span></button><input type="file" accept="image/*" class="van-uploader__input"></div>
       </div>
     </div>
   </div>