增值服务配置 服务介绍限制50个字输入，框框拉一下

src/views/valueAddedService/valueAddedConfig/index.vue

@@ -412,7 +412,14 @@ export default {
         {
           name: 'el-input',
           md: 24,
-          attributes: { disabled: false, placeholder: '请输入', type: "textarea" },
+          attributes: {
+            disabled: false,
+            placeholder: '请输入',
+            type: "textarea",
+            autosize: { minRows: 2, maxRows: 4 },
+            maxlength: 50,
+            'show-word-limit': true
+          },
           formItemAttributes: {
             label: '服务介绍',
             prop: 'intro',