/usr/lib/ghc-doc/hoogle/libghc-project-template-doc.txt is in libghc-project-template-doc 0.2.0-2build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-project-template-doc/html/project-template.txt