Copyright for mbuffer source package in Jammy

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: mbuffer
Upstream-Contact: Thomas Maier-Komor 
Source: https://www.maier-komor.de/mbuffer.html
License: GPL-3+
Files-Excluded: .hgignore .hgtags

Files: *
Copyright: Copyright (C) 2000-2021, Thomas Maier-Komor
License: GPL-3+

Files: debian/*
Copyright: Copyright (C) 2009-2011,2014-2021  Peter Pentchev 
License: GPL-3+

License: GPL-3+
  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 3 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.
  .
  On Debian systems, the complete text of the GNU General Public License
  version 3 can be found in `/usr/share/common-licenses/GPL-3'.