优化按钮

src/views/goods/category-create.vue

@@ -44,7 +44,7 @@
         </el-select>
       </el-form-item>
       <el-form-item>
-        <el-button type="primary" plain style="margin-right:10px" @click="backToList">返回</el-button>
+        <el-button style="margin-right:10px" @click="backToList">返回</el-button>
         <el-button type="primary" @click="updateData">提交</el-button>
       </el-form-item>
     </el-form>

src/views/goods/category-edit.vue

@@ -44,7 +44,7 @@
         </el-select>
       </el-form-item>
       <el-form-item>
-        <el-button type="primary" plain style="margin-right:10px" @click="backToList">返回</el-button>
+        <el-button style="margin-right:10px" @click="backToList">返回</el-button>
         <el-button type="primary" @click="updateData">提交</el-button>
       </el-form-item>
     </el-form>