/usr/lib/ghc-doc/hoogle/wai-handler-scgi.txt is in libghc-wai-handler-scgi-doc 1.3.0.2-2build5.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-wai-handler-scgi-doc/html/wai-handler-scgi.txt