Copyright for haskell-skylighting source package in Jammy

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: skylighting
Upstream-Contact: John MacFarlane 
Source: https://hackage.haskell.org/package/skylighting

Files: *
Copyright: 2016 John MacFarlane
License: GPL-2+

Files: debian/*
Copyright: held by the contributors mentioned in debian/changelog
License: GPL-2+

License: GPL-2+
 See /usr/share/common-licenses/GPL-2 on your Debian-based system.