Add abstract to Deploying virt-who configuration

Author: apinnick

guides/common/modules/proc_deploying-a-virt-who-configuration-on-target-server.adoc

@@ -3,7 +3,9 @@
 [id="deploying-a-virt-who-configuration-on-target-server_{context}"]
 = Deploying a virt-who configuration on {a-target}
 
-You can deploy a virt-who configuration for {provider} on {a-target}.
+[role="_abstract"]
+You deploy a virt-who configuration on {a-target} to enable virtual machine subscription tracking. You download a virt-who configuration script from the {ProjectWebUI} and then you run the script on {the-target}.
+
 ifdef::vmware-el,nutanix-el,hyperv-el[]
 The server can be physical or virtual.
 endif::[]