/usr/lib/ghc-doc/hoogle/asn1-data.txt is in libghc-asn1-data-doc 0.7.1-4build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-asn1-data-doc/html/asn1-data.txt