Update anchor link in Readme.md for proper scrolling

[Unsleeping]

This pull request updates the anchor link in the Readme.md file to ensure proper scrolling to the intended position on the test page.

• Changed the anchor link from ###tailwind to #tailwind in the Readme.md file. (the origin is: https://github.com/pacocoursey/next-themes###with-tailwind)

[vercel[bot]]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
next-themes-basic	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 4, 2023 9:32pm
next-themes-tailwind	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 4, 2023 9:32pm
next-themes-with-app-dir	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 4, 2023 9:32pm