/usr/lib/ghc-doc/hoogle/hbro.txt is in libghc-hbro-doc 1.1.2.0-3build3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-hbro-doc/html/hbro.txt
/usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-hbro-doc/html/hbro.txt