Use networking.k8s.io/v1beta1 for ingress apiVersion (#15190)

Signed-off-by: ialidzhikov <i.alidjikov@gmail.com>

content/en/docs/tasks/access-application-cluster/ingress-minikube.md

@@ -135,7 +135,7 @@ The following file is an Ingress resource that sends traffic to your Service via
 
 1. Create `example-ingress.yaml` from the following file:
 
-        apiVersion: extensions/v1beta1
+        apiVersion: networking.k8s.io/v1beta1 # for versions before 1.14 use extensions/v1beta1
         kind: Ingress
         metadata:
           name: example-ingress
@@ -160,7 +160,7 @@ The following file is an Ingress resource that sends traffic to your Service via
     Output:
     
     ```shell
-    ingress.extensions/example-ingress created
+    ingress.networking.k8s.io/example-ingress created
     ```
 
 1. Verify the IP address is set: