Changed macro version-sl-micro to version-operatingsystem (suse-edge#1004)

Co-authored-by: Jonas Arndt <jonas.arndt@suse.com>

Author: ehsjoar

asciidoc/quickstart/metal3.adoc

@@ -52,7 +52,7 @@ Some tools are required, these can be installed either on the management cluster
 * https://kubernetes.io/docs/reference/kubectl/kubectl/[Kubectl], https://helm.sh[Helm] and https://cluster-api.sigs.k8s.io/user/quick-start.html#install-clusterctl[Clusterctl]
 * A container runtime such as https://podman.io[Podman] or https://rancherdesktop.io[Rancher Desktop]
 
-* A SUSE Linux Micro {version-sl-micro} raw image created using the <<guides-kiwi-builder-images, Kiwi Builder>>
+* A SUSE Linux Micro {version-operatingsystem} raw image created using the <<guides-kiwi-builder-images, Kiwi Builder>>
 
 == Deployment