remove beta mention (#16925)

Author: patriciasantaana

src/content/docs/ddos-protection/dns-protection/index.mdx

@@ -21,7 +21,7 @@ The [Network Analytics dashboard](/analytics/network-analytics/) will display sy
 
 ## Availability
 
-Advanced DNS Protection is currently available in beta to [Magic Transit](/magic-transit/) customers.
+Advanced DNS Protection is currently available to [Magic Transit](/magic-transit/) customers.
 
 Protection for simpler DNS-based DDoS attacks is also included as part of the [Network-layer DDoS Attack Protection managed ruleset](/ddos-protection/managed-rulesets/network/).