Fix number of AKS IP addresses needed for management network

Author: b-branco

articles/private-5g-core/complete-private-mobile-network-prerequisites.md

@@ -37,7 +37,7 @@ Depending on your networking requirements (for example, if a limited set of subn
 - Network address in Classless Inter-Domain Routing (CIDR) notation. 
 - Default gateway. 
 - One IP address for the Azure Stack Edge Pro device's management port. You'll choose a port between 2 and 4 to use as the management port as part of [setting up your Azure Stack Edge Pro device](#order-and-set-up-your-azure-stack-edge-pro-devices).*
-- Three sequential IP addresses for the Azure Kubernetes Service on Azure Stack HCI (AKS-HCI) cluster nodes.
+- Six sequential IP addresses for the Azure Kubernetes Service on Azure Stack HCI (AKS-HCI) cluster nodes.
 - One IP address for accessing local monitoring tools for the packet core instance.
 
 ### Access network