docs: substitute OpenShift badge with Nightly in README.adoc

README.adoc

@@ -9,7 +9,7 @@ image:https://goreportcard.com/badge/github.com/apache/camel-k["Go Report Card",
 image:https://godoc.org/github.com/apache/camel-k?status.svg["GoDoc", link="https://godoc.org/github.com/apache/camel-k"]
 image:https://github.com/apache/camel-k/workflows/kubernetes/badge.svg["Kubernetes", link="https://github.com/apache/camel-k/actions/workflows/common.yml"]
 image:https://github.com/apache/camel-k/workflows/knative/badge.svg["Knative", link="https://github.com/apache/camel-k/actions/workflows/knative.yml"]
-image:https://github.com/apache/camel-k/actions/workflows/openshift.yml/badge.svg["OpenShift", link="https://github.com/apache/camel-k/actions/workflows/openshift.yml"]
+image:https://github.com/apache/camel-k/actions/workflows/release.yml/badge.svg["Nightly", link="https://github.com/apache/camel-k/actions/workflows/release.yml"]
 image:https://img.shields.io/badge/zulip-join_chat-brightgreen.svg["Chat on Zulip", link="https://camel.zulipchat.com"]
 
 Apache Camel K is a lightweight integration framework built from **Apache Camel** that runs natively on Kubernetes and is specifically designed for serverless and microservice architectures. Users of `Camel K` can instantly run integration code written in Camel DSL on their preferred **Cloud** provider.