CNV-39489: Added the missing namespace definition

In addition, I noticed that the command in the previous step was missing
the prompt so I added it to ensure it is formated the same way as other
commands.

Author: jhradilek

modules/virt-configuring-secondary-network-vm-live-migration.adoc

@@ -50,18 +50,19 @@ spec:
 +
 [source,terminal,subs="attributes+"]
 ----
-oc edit hyperconverged kubevirt-hyperconverged -n {CNVNamespace}
+$ oc edit hyperconverged kubevirt-hyperconverged -n {CNVNamespace}
 ----
 
 . Add the name of the `NetworkAttachmentDefinition` object to the `spec.liveMigrationConfig` stanza of the `HyperConverged` CR:
 +
 .Example `HyperConverged` manifest
-[source,yaml]
+[source,yaml,subs="attributes+"]
 ----
 apiVersion: hco.kubevirt.io/v1beta1
 kind: HyperConverged
 metadata:
   name: kubevirt-hyperconverged
+  namespace: {CNVNamespace}
 spec:
   liveMigrationConfig:
     completionTimeoutPerGiB: 800