/usr/lib/ghc-doc/hoogle/libghc-highlighting-kate-doc.txt is in libghc-highlighting-kate-doc 0.5.8.5-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-highlighting-kate-doc/html/highlighting-kate.txt