/usr/share/perl5/ is in libtext-markup-perl 0.23-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/perl5/Text/
/usr/share/perl5/Text/Markup.pm
/usr/share/perl5/Text/Markup/
/usr/share/perl5/Text/Markup/Asciidoc.pm
/usr/share/perl5/Text/Markup/Multimarkdown.pm
/usr/share/perl5/Text/Markup/Bbcode.pm
/usr/share/perl5/Text/Markup/Trac.pm
/usr/share/perl5/Text/Markup/Mediawiki.pm
/usr/share/perl5/Text/Markup/rst2html_lenient.py
/usr/share/perl5/Text/Markup/Textile.pm
/usr/share/perl5/Text/Markup/Pod.pm
/usr/share/perl5/Text/Markup/Creole.pm
/usr/share/perl5/Text/Markup/Markdown.pm
/usr/share/perl5/Text/Markup/None.pm
/usr/share/perl5/Text/Markup/Rest.pm
/usr/share/perl5/Text/Markup/HTML.pm