fix：活动配置

src/pages/Groupmeal/Marketing/index.vue

@@ -261,7 +261,7 @@
                 this.configForm.result.map((item, index) => (item.level = index + 1));
                 console.log("this.listParams.config", this.configForm.result);
                 if (!this.configForm.result[0]) return this.$message.error("请配置档位");
-                else if (this.configForm.result.length && this.configForm.result.length > 2) {
+                else if (this.configForm.result.length && this.configForm.result.length > 1) {
                     for (let i = 1; i < this.configForm.result.length; i++) {
                         if (!this.configForm.result[i].assess_order_num || !this.configForm.result[i].reward_amount) {
                             return this.$message.error("输入不能为空");