Add leafai domain

[longfeihao]

Hi maintainers, I apologize for letting my previous PR expire. I was on a holiday break and couldn't update the required information in time. My website is now fully set up, and I have completed all the requirements below. Thank you for your time and for maintaining this project!
(维护者你们好，很抱歉让之前的 PR 过期了。我之前在休假，没能及时更新所需的信息。现在我的网站已经搭建完毕，我也完成了下面所有的要求。感谢你们的时间和对这个项目的维护！)

中文个人简介：https://longfeihao.github.io/about/
English about me: https://longfeihao.github.io/about/about.en

[is-a-dev-reviewbot]

Hi there! 👋

You've successfully made a pull request! Here are some steps to do while waiting for a maintainer to review the pull request:

1. Check if the checks have failed or passed. You should see the status at the bottom of the pull request or a icon next to the commit ID.
2. Check if the filename, file format and records are valid. If you don't know if it's valid, please read this part of the documentation and use a json validator/formator, like jsonlint. Make sure the file is also in the domains directory and not somewhere else in the repository.
3. Please make sure you've filled out the pull request template. It is generally not a good idea to overwrite the pull request template with something else unless you know what you are doing. Make sure to add either a publicly available preview of your website or a screenshot of it.
4. Please wait patiently. Pull requests may take between a couple hours to 3 days. All of the maintainer team are volunteers and try to review the pull requests in their spare time. If you want a chance of getting your pull request merged faster then send your pull request number once in the #pull-requests channel in our Discord server and wait patiently.
5. Please note that mentioning maintainers in pull requests without it being reviewed could lead to you getting marked as "low priority", same thing applies to either pinging the maintainers in the Discord server or messaging the maintainers in private to review the pull request.

[is-a-dev-reviewbot]

Pull Request Merged 🎉

What to do next

Just follow the steps below and you can start using your domain!

GitHub Pages

1. Go to your GitHub repository that you use for your is-a.dev domain
2. Click on the Settings tab
3. Click on the Pages link in the sidebar
4. In the custom domain option, enter the domain you registered.
5. Check the Enforce HTTPS checkbox
6. Give your domain some time (~24 hours) for the changes to propagate
7. Enjoy your domain!

Vercel

You may have to verify the domain so that you can succesfully add the domain to your Vercel website, if you have done that by now then the domain should already be connected! If it hasn't, go to the Domain section and click on "Refresh" to see if it works.

Cloudflare Pages

If you haven't done this by now, you need to add the is-a.dev domain to your Cloudflare Pages website. To do so, navigate to your settings for the website, click on "Custom domains", click on "Add a custom domain" instead of the other option as it will make you use NS records so that the domain can be on Cloudflare DNS, add the is-a.dev domain that you got and you are done!

Other hosting providers

Just make sure you have added the domain to your website. You try to see if there is a guide for your hosting provider at our documentation to see how you can configure it. It's also a good idea to also see your hosting providers' documentation to see how you can add a custom domain.

Webserver (like NGINX, Caddy, Apache and etc.)

You have to add these in your webserver config by yourself. If you don't know how to add a domain to your webserver then either use a different method of hosting your website or search on a search engine on how to use the said webserver.

Need help with your domain? If you have some trouble setting up your domain, please create an issue or ask in the Discord server and we will try and help you as soon as possible!
Made a mistake in the records? Don't worry, you can create a new pull request with the corrections.

Thanks for reading the message and thanks for using is-a.dev! ❤️