fix: 修正商品添加图片上传

src/views/business/goods/add.vue

@@ -150,7 +150,7 @@ export default {
         }) : []
       },
       set(val) {
-        this.addData.picUrl = val.map(item => { return item.fileName }).toString()
+        this.$set(this.addData, 'picUrl', val.map(item => { return item.fileName }).toString())
       }
     }
   },