Fix feature state for MixedProtocolLBService

Author: Shubham82

content/en/docs/concepts/services-networking/service.md

@@ -618,7 +618,7 @@ can define your own (provider specific) annotations on the Service that specify
 
 #### Load balancers with mixed protocol types
 
-{{< feature-state for_k8s_version="v1.24" state="beta" >}}
+{{< feature-state for_k8s_version="v1.26" state="stable" >}}
 
 By default, for LoadBalancer type of Services, when there is more than one port defined, all
 ports must have the same protocol, and the protocol must be one which is supported