Add hyperlink to License webpage in top badge

README.md

@@ -3,7 +3,7 @@ Graphviz: A Plugin for Pelican
 
 [![Build Status](https://img.shields.io/github/actions/workflow/status/pelican-plugins/graphviz/main.yml?branch=main)](https://github.com/pelican-plugins/graphviz/actions)
 [![PyPI Version](https://img.shields.io/pypi/v/pelican-graphviz)](https://pypi.org/project/pelican-graphviz/)
-![License](https://img.shields.io/pypi/l/pelican-graphviz?color=blue)
+[![License](https://img.shields.io/pypi/l/pelican-graphviz?color=blue)](https://www.gnu.org/licenses/agpl-3.0.en.html)
 
 Graphviz is a Pelican plugin that allows the inclusion of [Graphviz][] images using the Markdown markup format. The code for the Graphviz figure is included as a block in the article’s source, and the image is embedded in HTML using the Base64 format.
 
@@ -141,7 +141,7 @@ Thanks to [Justin Mayer][], for helping with migration of this plugin under the
 Author
 ------
 
-Copyright © 2015, 2021, 2023  Rafael Laboissière <[email protected]>
+Copyright © 2015, 2021, 2023, 2024  Rafael Laboissière <[email protected]>
 
 License
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