/usr/share/doc/libghc-http-streams-prof/changelog.Debian.gz is in libghc-http-streams-prof 0.8.3.3-2build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libghc-http-streams-prof/../libghc-http-streams-dev/changelog.Debian.gz