Update README.md

Author: santoshm1188

README.md

@@ -1,5 +1,5 @@
 [![Build Status](https://travis-ci.org/kicksolutions/swagger2puml.svg?branch=master)](https://travis-ci.org/kicksolutions/swagger2puml)
-[![Maven Central](https://maven-badges.herokuapp.com/maven-central/io.swagger/swagger-codegen-project/badge.svg?style=plastic)](https://maven-badges.herokuapp.com/maven-central/io.github.kicksolutions/swagger-plantuml-reactor)
+[![Maven Central](https://maven-badges.herokuapp.com/maven-central/io.swagger/swagger-codegen-project/badge.svg?style=plastic)](https://oss.sonatype.org/#nexus-search;gav~io.github.kicksolutions~swagger-plantuml-core~~~)
 [![codecov](https://codecov.io/gh/kicksolutions/swagger2puml/branch/master/graph/badge.svg)](https://codecov.io/gh/kicksolutions/swagger2puml)
 
 # Swagger2Puml