Copyright for ibus-libthai source package in Noble

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: ibus-libthai
Upstream-Contact: Theppitak Karoonboonyanan 
Source: https://linux.thai.net/pub/thailinux/software/libthai/

Files: *
Copyright: 2013-2021  Theppitak Karoonboonyanan 
License: GPL-2+

Files: debian/*
Copyright: 2013-2021 Theppitak Karoonboonyanan 
License: GPL-2+

License: GPL-2+
 This package 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 of the License, or
 (at your option) any later version.
 .
 This package 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 version 2 can be found in "/usr/share/common-licenses/GPL-2".