/usr/lib/ghc-doc/hoogle/libghc-hoauth-doc.txt is in libghc-hoauth-doc 0.3.5-5build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-hoauth-doc/html/hoauth.txt