OCPBUGS-31460: Updated docs to expand multiple vSphere failure domain for region and zone

Author: dfitzmau

modules/configuring-vsphere-regions-zones.adoc

@@ -24,7 +24,7 @@ The example uses the `govc` command. The `govc` command is an open source comman
 +
 [IMPORTANT]
 ====
-You must specify at least one failure domain for your {product-title} cluster, so that you can provision datacenter objects for your VMware vCenter server. Consider specifying multiple failure domains if you need to provision virtual machine nodes in different datacenters, clusters, datastores, and other components.
+You must specify at least one failure domain for your {product-title} cluster, so that you can provision datacenter objects for your VMware vCenter server. Consider specifying multiple failure domains if you need to provision virtual machine nodes in different datacenters, clusters, datastores, and other components. To enable regions and zones, you must define multiple failure domains for your {product-title} cluster.
 ====
 
 .Procedure

modules/installation-vsphere-regions-zones.adoc

@@ -11,7 +11,7 @@
 [id="installation-vsphere-regions-zones_{context}"]
 = VMware vSphere region and zone enablement
 
-You can deploy an {product-title} cluster to multiple vSphere datacenters that run in a single VMware vCenter. Each datacenter can run multiple clusters. This configuration reduces the risk of a hardware failure or network outage that can cause your cluster to fail.
+You can deploy an {product-title} cluster to multiple vSphere datacenters that run in a single VMware vCenter. Each datacenter can run multiple clusters. This configuration reduces the risk of a hardware failure or network outage that can cause your cluster to fail. To enable regions and zones, you must define multiple failure domains for your {product-title} cluster.
 
 [IMPORTANT]
 ====