Incorrect pip install documentation

[anshulbehl]

Prerequisites

• This was not already reported in the past (duplicate check)
• It does reproduce it with code from main branch (latest unreleased version)
• I include a minimal example for reproducing the bug
• The bug is not trivial, as for those a direct pull-request is preferred
• Running pip check does not report any conflicts
• I was able to reproduce the issue on a different machine
• The issue is not specific to any driver other than 'default' one

Environment

This is a documentation bug on the pip install of molecule

What happened

https://ansible.readthedocs.io/projects/molecule/installation/#pip

The above docs mention ansible-core as not a direct dependency, but looks like it is if I do a pip instal or I check

https://github.com/ansible/molecule/blob/v6.0.2/.config/requirements.in#L2

Reproducing example

No response

[alisonlhart]

Fixed in #4279.