Update CI badge in README

Author: vietj

Diff for: README.md

@@ -1,6 +1,6 @@
 # RabbitMQ Client for Vert.x
 
-[![Build Status](https://github.com/vert-x3/vertx-rabbitmq-client/workflows/CI/badge.svg?branch=master)](https://github.com/vert-x3/vertx-rabbitmq-client/actions?query=workflow%3ACI)
+[![Build Status (5.x)](https://github.com/eclipse-vertx/vertx-rabbitmq-client/actions/workflows/ci-5.x.yml/badge.svg)](https://github.com/eclipse-vertx/vertx-rabbitmq-client/actions/workflows/ci-5.x.yml)
 
 A Vert.x client allowing applications to interact with a RabbitMQ broker (AMQP 0.9.1)