Improve markdown structure of docs llms.txt & Actor detail

[jbartadev]

Epic for improving the current state of the llms.txt file (https://docs.apify.com/llms.txt) and the Actor detail markdown version (e.g., https://apify.com/apify/web-scraper.md)

[jancurn]

Hey team, please keep me posted about the progress, I'll be happy to test the new version

[jancurn]

One more feedback:

Let's add to the very top of https://docs.apify.com/llms.txt this text, to make this info easy to find for everyone. And add some basic text there as well, to introduce the Apify platform and the docs.

The full Markdown export of the docs is available at:
https://docs.apify.com/llms-full.txt

[jancurn]

Guys, what is the status for this project? Seems there is no progress over the past 2 weeks

[HonzaTuron]

@jancurn We've merged continuation few hours back: #1796, also created ticket for fixing description as it doesn't seem llms issue, but rather general Docusaurus one: #1870