Fix Maven badge

Author: acogoluegnes

README.adoc

@@ -4,7 +4,7 @@
 
 = RabbitMQ Java Client
 
-image:https://maven-badges.herokuapp.com/maven-central/com.rabbitmq/amqp-client/badge.svg["Maven Central", link="https://maven-badges.herokuapp.com/maven-central/com.rabbitmq/amqp-client"]
+image:https://maven-badges.sml.io/sonatype-central/com.rabbitmq/amqp-client/badge.svg?subject=maven["Maven Central", link="https://maven-badges.sml.io/sonatype-central/com.rabbitmq/amqp-client/"]
 image:https://github.com/rabbitmq/rabbitmq-java-client/actions/workflows/test.yml/badge.svg["Build Status", link="https://github.com/rabbitmq/rabbitmq-java-client/actions/workflows/test.yml"]
 
 This repository contains source code of the https://www.rabbitmq.com/client-libraries/java-api-guide[RabbitMQ Java client].