修复编辑图片的bug

src/pages/v2/categories/category.vue

@@ -29,7 +29,7 @@
               <span>{{ scope.row.name }}</span>
             </template>
           </el-table-column>
-          <el-table-column label="背景图">
+          <el-table-column label="标签">
             <template slot-scope="scope">
               <div slot="reference" class="name-wrapper">
                 <el-tag size="medium">{{ scope.row.tag }}</el-tag>
@@ -37,7 +37,7 @@
             </template>
           </el-table-column>
           <el-table-column
-            label="分类标签">
+            label="背景图">
             <template slot-scope="scope">
               <div slot="reference" class="name-wrapper">
                 <div class="demo-image__preview">