Copyright for gnome-clocks source package in Focal

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: gnome-clocks
Source: https://download.gnome.org/sources/gnome-clocks/

Files: *
Copyright: 2011-2013 Collabora Ltd.
           2012-2013 Seif Lotfy, Emily Gonyer, Eslam Mostafa
           2012-2013 Paolo Borelli, Volker Sobek
License: GPL-2+
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public
 License as published by the Free Software Foundation; either
 version 2.1 of the License, or (at your option) any later version.
 .
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 General Public License for more details.
 .
 You should have received a copy of the GNU General Public License
 along with this program.  If not, see .
 .
 On Debian systems, the complete text of the GNU General
 Public License can be found in `/usr/share/common-licenses/GPL-2'.