Update articles/frontdoor/high-availability.md

Co-authored-by: John Downs <[email protected]>

Author: halkazwini

articles/frontdoor/high-availability.md

@@ -84,7 +84,7 @@ This DNS-based load balancing solution uses multiple Azure Traffic Manager profi
 It's important to understand the feature differences between Front Door and Application Gateway WAF in case you're utilizing any features Application Gateway WAF doesn't offer. The following two tables provide an overview.
 
 > [!IMPORTANT]
-> This solution assumes you are currently using Azure Front Door to serve traffic across multiple regions or globally. In this design, the steps below introduce a **secondary Azure Traffic Manager configured with Performance routing between the primary Traffic Manager and regional Application Gateway instances**. This approach is necessary because Azure Front Door is a global Layer‑7 service, so the secondary Traffic Manager effectively replaces Front Door's global latency‑based routing by acting as the global load‑balancing layer. As a result, **Traffic Manager preserves latency‑optimized user routing for a geographically distributed audience**. Given this architectural shift, **you must evaluate global traffic patterns and delploy Application Gateway instances in regions that have meaningful user volume to ensure optimal performance and resilience**.
+> This solution assumes you are currently using Azure Front Door to serve traffic across multiple regions or globally. In this design, the steps below introduce a **secondary Azure Traffic Manager configured with Performance routing between the primary Traffic Manager and regional Application Gateway instances**. This approach is necessary because Azure Front Door is a global Layer‑7 service, so the secondary Traffic Manager effectively replaces Front Door's global latency‑based routing by acting as the global load‑balancing layer. As a result, **Traffic Manager preserves latency‑optimized user routing for a geographically distributed audience**. Given this architectural shift, **you must evaluate global traffic patterns and deploy Application Gateway instances in regions that have meaningful user volume to ensure optimal performance and resilience**.
 
 #### Features differences