fix(readme-copyright): Add copyright ZMS-180 (#744)

ZMS-180

Author: NickOvt

README.md

@@ -29,4 +29,8 @@ WildDuck tries to follow Gmail in product design. If there's a decision to be ma
 
 ## License
 
-WildDuck Mail Agent is licensed under the [European Union Public License 1.2](https://joinup.ec.europa.eu/collection/eupl/eupl-text-eupl-12) or later.
+WildDuck Mail Server is licensed under the [European Union Public License 1.2](https://joinup.ec.europa.eu/collection/eupl/eupl-text-eupl-12) or later.
+
+> WildDuck Mail Server is part of the Zone Mail Suite (ZMS). Suite of programs and modules for an efficient, fast and modern email server.
+
+Copyright (c) 2024 Zone Media OÜ