Link checker throwing a lot of false positives & weird links

It seems that with enabling `llm.txt` for docs.apify.com completely broke our implementation of lychee link checker and it started throwing out over 2,5k errors.

This is the first report with over 2,5k errors : [click](https://github.com/apify/apify-docs/actions/runs/16818691851)
The dates coincide with enabling `llms.txt` :  [click](https://github.com/apify/apify-docs/pull/1736)

