/usr/lib/ghc-doc/hoogle/libghc-murmur-hash-doc.txt is in libghc-murmur-hash-doc 0.1.0.9-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-murmur-hash-doc/html/murmur-hash.txt