(docs) README to link GitHub project

Author: alexey-pelykh

README.md

@@ -1,6 +1,6 @@
 # PCRE4J: PCRE for Java
 
-![GitHub Repo stars](https://img.shields.io/github/stars/alexey-pelykh/pcre4j?style=flat&logo=github)
+[![GitHub Repo stars](https://img.shields.io/github/stars/alexey-pelykh/pcre4j?style=flat&logo=github)](https://github.com/alexey-pelykh/pcre4j)
 [![License](https://img.shields.io/github/license/alexey-pelykh/pcre4j)](https://www.gnu.org/licenses/lgpl-3.0.txt)
 [![CI](https://img.shields.io/github/check-runs/alexey-pelykh/pcre4j/main)](https://github.com/alexey-pelykh/pcre4j/actions/workflows/ci.yaml)
 [![codecov](https://codecov.io/gh/alexey-pelykh/pcre4j/graph/badge.svg?token=7UJZ501GWT)](https://codecov.io/gh/alexey-pelykh/pcre4j)