chore: update eslint && lint code

src/components/Upload/singleImage3.vue

@@ -7,15 +7,16 @@
       :on-success="handleImageSuccess"
       class="image-uploader"
       drag
-      action="https://httpbin.org/post">
-      <i class="el-icon-upload"/>
+      action="https://httpbin.org/post"
+    >
+      <i class="el-icon-upload" />
       <div class="el-upload__text">将文件拖到此处，或<em>点击上传</em></div>
     </el-upload>
     <div class="image-preview image-app-preview">
       <div v-show="imageUrl.length>1" class="image-preview-wrapper">
         <img :src="imageUrl">
         <div class="image-preview-action">
-          <i class="el-icon-delete" @click="rmImage"/>
+          <i class="el-icon-delete" @click="rmImage" />
         </div>
       </div>
     </div>
@@ -23,7 +24,7 @@
       <div v-show="imageUrl.length>1" class="image-preview-wrapper">
         <img :src="imageUrl">
         <div class="image-preview-action">
-          <i class="el-icon-delete" @click="rmImage"/>
+          <i class="el-icon-delete" @click="rmImage" />
         </div>
       </div>
     </div>