/usr/lib/ghc-doc/hoogle/hbro-contrib.txt is in libghc-hbro-contrib-doc 1.1.1.0-1build8.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-hbro-contrib-doc/html/hbro-contrib.txt