docs: Update documentation for active link with Tailwind

[bastianplsfix]

Proposed change:

• Document styling for aria-current attribute separately for Tailwind and Twind.

Disclaimer: I am new to open-source contributions and are unfamiliar with the process for submitting a pull request. I have found some more areas of improvement in the Fresh documentation. Should this PR not be up-to-standards on how to contribute, please guide me in the right direction. I have a few more suggestions on issues I found while developing a new Fresh app.

Any guidance would be helpful, either reach out to me on GitHub, Discord (bastianplsfix) or X (bastianplsfix).

Best, Sebastian 🦕