chore: use subtitle for zh-CN

[thinkasany]

使用副标题优化组件文档，更好的区分中文翻译和原文，也更美观。

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Name	Status	Preview	Comments	Updated (UTC)
ant-design-web3	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Mar 19, 2024 8:04am

[github-actions]

[jeasonstudio]

Cool! 原来还有 subtitle 这个配置项，之前没注意。

[thinkasany]

Cool! 原来还有 subtitle 这个配置项，之前没注意。

偷看antd发现的，一开始还以为要自定义theme，也是没想到这么方便