Merge pull request #52646 from skopacz1/GH52534

GH#52534: Adding missing step

Author: jab-rh

modules/sno-adding-worker-nodes-to-sno-clusters-manually.adoc

@@ -70,6 +70,13 @@ $ chmod +x openshift-install
 $ ISO_URL=$(./openshift-install coreos print-stream-json | grep location | grep $ARCH | grep iso | cut -d\" -f4)
 ----
 
+. Download the {op-system} ISO:
++
+[source,terminal]
+----
+$ curl -L $ISO_URL -o rhcos-live.iso
+----
+
 . Use the {op-system} ISO and the hosted `worker.ign` file to install the worker node:
 
 .. Boot the target host using the {op-system} ISO and your preferred method of installation.