Update deploy-s4hana.md

Author: jahjha

articles/sap/center-sap-solutions/deploy-s4hana.md

@@ -25,6 +25,7 @@ In this how-to guide, you'll learn how to deploy S/4HANA infrastructure in *Azur
 - An Azure account with **Contributor** role access to the subscriptions and resource groups in which you'll create the Virtual Instance for SAP solutions (VIS) resource.
 - A **User-assigned managed identity** which has Contributor role access on the Subscription or atleast all resource groups (Compute, Network,Storage). If you wish to install SAP Software through the Azure Center for SAP solutions, also provide Storage Blob data Reader, Reader and Data Access roles to the identity on SAP bits storage account where you would store the SAP Media.
 - A [network set up for your infrastructure deployment](prepare-network.md).
+- Availability of either Standard_D4ds_v4 or Standard_E4s_v3 SKUS which will be used for "Deployer VM".
 
 ## Deployment types