希望fun的swagger语法与阿里云API网关的swagger语法保持一致

问题描述：目前fun的swagger语法与阿里云API网关的swagger语法不一致，使用不方便。
期望结果：希望能用统一语法格式

参考信息：阿里云网关Swagger的语法：https://help.aliyun.com/document_detail/88956.html

Start by comparing fun's current Swagger syntax with the Alibaba Cloud API Gateway Swagger documentation linked in the issue. Identify the repository entry point that parses or generates this syntax; the issue names no file or test, so the work is complete only when the supported format is documented and works consistently with the referenced API Gateway syntax.

Written by the indexing model from the issue text.