updated syntax

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cc: @AbdullahBell

Author: AbdullahBell

articles/ddos-protection/ddos-protection-reference-architectures.md

@@ -19,7 +19,7 @@ Azure DDoS Protection is designed [for services that are deployed in a virtual n
 > Protected resources include public IPs attached to an IaaS VM (except for single VM running behind a public IP), Load Balancer (Classic & Standard Load Balancers), Application Gateway (including WAF) cluster, Firewall, Bastion, VPN Gateway, Service Fabric, IaaS based Network Virtual Appliance (NVA) or Azure API Management (Premium tier only), connected to a virtual network (VNet) in the external mode. Protection also covers public IP ranges brought to Azure via Custom IP Prefixes (BYOIPs). PaaS services (multi-tenant), which includes Azure App Service Environment for Power Apps, Azure API Management in deployment modes other than those supported above, or Azure Virtual WAN are not supported at present.
 
 > [!NOTE]
-> Protected resources that include public IPs created from public IP adress prefix is not supported at present.
+> Protected resources that include public IPs created from public IP address prefix are not supported at present.
 
 ## Virtual machine (Windows/Linux) workloads