Update README.md

Author: KTC-YoheiMiyashita

README.md

@@ -3,7 +3,7 @@ Spring Batch3 Starter - Accelerate Your Spring Boot 3 Batch Development🚀
 [![GitHub stars](https://img.shields.io/github/stars/KTC-YoheiMiyashita/SpringBoot3BatchStarter?style=social)](https://github.com/KTC-YoheiMiyashita/SpringBoot3BatchStarter/stargazers)
 [![Build](https://github.com/kinto-technologies/SpringBoot3BatchStarter/actions/workflows/build.yml/badge.svg)](https://github.com/kinto-technologies/SpringBoot3BatchStarter/actions/workflows/build.yml)
 ![Java 21](https://img.shields.io/badge/Java-21%2B-blue)
-[![License: Apache 2.0](https://img.shields.io/badge/License-Apache%202.0-brightgreen.svg)](https://opensource.org/licenses/Apache-2.0)
+[![License: Apache 2.0](https://img.shields.io/badge/License-Apache%202.0-CC2233.svg)](https://opensource.org/licenses/Apache-2.0)
 
 # SpringBoot3BatchStarter