Copyright for package-notes source package in Yangtze V1.0

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/

Files: *
Copyright: 2021-2022 Zbigniew Jędrzejewski-Szmek 
           2021-2022 Luca Boccassi 
           2021 Victor Westerhuis  
           2021 Mark Wielaard 
           2022 Frantisek Sumsal 
License: CC0-1.0
 To the extent possible under law, the author(s) have dedicated all copyright
 and related and neighboring rights to this software to the public domain
 worldwide. This software is distributed without any warranty.
 .
 You should have received a copy of the CC0 Public Domain Dedication along with
 this software. If not, see .
 .
 On Debian systems, the complete text of the CC0 1.0 Universal license can be
 found in ‘/usr/share/common-licenses/CC0-1.0’.