/usr/share/doc/libapache2-mod-perl2-dev/changelog.Debian.gz is in libapache2-mod-perl2-dev 2.0.8+httpd24-r1449661-6ubuntu2.1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libapache2-mod-perl2-dev/../libapache2-mod-perl2/changelog.Debian.gz