Update README.md

Fixed maven reference to central repo

README.md

@@ -1,7 +1,7 @@
 # kotlin-libp2p
 
 [![ci](https://github.com/erwin-kok/kotlin-libp2p/actions/workflows/ci.yaml/badge.svg)](https://github.com/erwin-kok/kotlin-libp2p/actions/workflows/ci.yaml)
-[![Maven Central](https://img.shields.io/maven-central/v/org.erwinkok.libp2p/kotlin-libp2p)](https://central.sonatype.com/artifact/org.erwinkok.libp2p/kotlin-libp2p)
+[![Maven Central](https://img.shields.io/maven-central/v/org.erwinkok.libp2p/libp2p-core)](https://central.sonatype.com/artifact/org.erwinkok.libp2p/libp2p-core)
 [![Kotlin](https://img.shields.io/badge/kotlin-1.9.0-blue.svg?logo=kotlin)](http://kotlinlang.org)
 [![License](https://img.shields.io/github/license/erwin-kok/kotlin-libp2p.svg)](https://github.com/erwin-kok/kotlin-libp2p/blob/master/LICENSE)
 
@@ -202,4 +202,4 @@ effort. Please consider giving kudos to the libp2p-go authors.
 
 ## License
 
-This project is licensed under the BSD-3-Clause license, see [`LICENSE`](LICENSE) file for more details. 
+This project is licensed under the BSD-3-Clause license, see [`LICENSE`](LICENSE) file for more details.