/usr/lib/ghc-doc/hoogle/libghc-auto-update-doc.txt is in libghc-auto-update-doc 0.1.4-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-auto-update-doc/html/auto-update.txt