pmbootstrap wheel installs files to /usr/lib/python3.12/site-packages/docs

Hello!

Arch Linux distributes pmbootstrap by building it's source code release into a wheel and unpacking it into the system python install.

Somebody noticed that, starting with pmbootstrap 2.3.0 the wheel also installs a package named docs into the global import namespace.

I think this module should be excluded in pyproject.toml, so the pmbootstrap wheel only contains pmb.

Thanks!