/usr/share/doc/libghc-data-default-prof/changelog.Debian.gz is in libghc-data-default-prof 0.5.3-5.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libghc-data-default-prof/../libghc-data-default-dev/changelog.Debian.gz