/usr/lib/ghc-doc/hoogle/html-conduit.txt is in libghc-html-conduit-doc 1.1.0-2build6.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-html-conduit-doc/html/html-conduit.txt