For #709. Fix license link

The front-facing link in Creative Commons has adjusted though older
links still work. This does not resolve the question of multiple
versions of the CC0 license.

Author: binkley

README.md

@@ -33,7 +33,7 @@ align="right" width="20%" height="auto"/>
 [![coverage](https://github.com/binkley/modern-java-practices/raw/master/images/jacoco.svg)](https://github.com/binkley/modern-java-practices/actions/workflows/ci.yml)
 [![pull requests](https://img.shields.io/github/issues-pr/binkley/modern-java-practices.svg)](https://github.com/binkley/modern-java-practices/pulls)
 [![issues](https://img.shields.io/github/issues/binkley/modern-java-practices.svg)](https://github.com/binkley/modern-java-practices/issues/)
-[![license](https://img.shields.io/badge/License-CC0_1.0-lightgrey.svg)](http://creativecommons.org/publicdomain/zero/1.0/)
+[![license](https://img.shields.io/badge/License-CC0_1.0-lightgrey.svg)](https://creativecommons.org/public-domain/cc0/)
 
 > [!WARNING]
 > For those using the DependencyCheck plugins for Gradle or Maven, over the