Compressed manpages have different extension than those listed in the RECORD file,
so they were not recognized when %%pyproject_save_files '+auto' flag
was provided.
To enable the path recognition, if the manpage extension matches the one
listed in brp-compres, the extension is removed, and an asterisk is now added
to the manpages filenames.
Source: https://docs.fedoraproject.org/en-US/packaging-guidelines/#_manpages
Related: rhbz#1950291
Karolina Surma