/usr/lib/ghc-doc/hoogle/libghc-file-embed-doc.txt is in libghc-file-embed-doc 0.0.10-3build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-file-embed-doc/html/file-embed.txt