docs(README): update Maven Central badge with link to artifact page

Update the Maven Central badge in the README file to include a direct link to the Chapi artifact page on Sonatype Central. This change enhances the readability and navigability of the project's README, providing quick access to the artifact for users.

README.md

@@ -5,7 +5,7 @@
 [![Chapi CI](https://github.com/modernizing/chapi/actions/workflows/ci.yml/badge.svg)](https://github.com/modernizing/chapi/actions/workflows/ci.yml)
 [![codecov](https://codecov.io/gh/phodal/chapi/graph/badge.svg?token=sdB5L3xbRv)](https://codecov.io/gh/phodal/chapi)
 [![Maintainability](https://api.codeclimate.com/v1/badges/2af5f5168a9ceb2ebe9b/maintainability)](https://codeclimate.com/github/phodal/chapi/maintainability)
-![Maven Central](https://img.shields.io/maven-central/v/com.phodal.chapi/chapi-domain)
+[![Maven Central](https://img.shields.io/maven-central/v/com.phodal.chapi/chapi-domain)](https://central.sonatype.com/artifact/com.phodal.chapi/chapi-domain)
 
 > CHAPI (Common Hierarchical Abstract Parser and Information Converter) streamlines code analysis by converting diverse
 > language source code into a unified abstract model, simplifying cross-language development. Chapi