/usr/lib/ghc-doc/hoogle/RSA.txt is in libghc-rsa-doc 1.2.2.0-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-rsa-doc/html/RSA.txt
/usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-rsa-doc/html/RSA.txt