How is this an issue though? (Its just a miswording not an issue, the problem tells you what you need to do, so just do it or find other problems if you aren't satisfied with that detail).

Most if not all posted solutions are incorrect.

A URL may have any number of subdomains, and may have a large variety of suffixes (see: https://publicsuffix.org/list/).

For example:

http://some.subdomain.mail.google.sth.ac.at

Is a valid URL. This project attempts to address the problem, but is clearly beyond the scope of this Kata (as it is marked #regex): https://github.com/lupomontero/psl.

The instructions should be modified to state what subdomains and suffixes are allowed.