/usr/lib/ghc-doc/hoogle/libghc-conduit-extra-doc.txt is in libghc-conduit-extra-doc 1.1.13.3-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-conduit-extra-doc/html/conduit-extra.txt