/usr/lib/ghc-doc/hoogle/socks.txt is in libghc-socks-doc 0.4.1-3build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-socks-doc/html/socks.txt
/usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-socks-doc/html/socks.txt