/usr/share/doc/libghc-pandoc-citeproc-prof/changelog.Debian.gz is in libghc-pandoc-citeproc-prof 0.9-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libghc-pandoc-citeproc-prof/../libghc-pandoc-citeproc-dev/changelog.Debian.gz