Mention the difference in service lb label for RKE2 (#275)

Signed-off-by: Derek Nola <derek.nola@suse.com>

docs/networking/networking_services.md

@@ -120,4 +120,8 @@ To disable the NGINX ingress controller, start each server with the `disable: rk
 
 Kubernetes Services can be of type LoadBalancer but it requires an external load balancer controller to implement things correctly and for example,provide the external-ip. RKE2 can optionally deploy a load balancer controller known as [ServiceLB](https://github.com/k3s-io/klipper-lb) that uses available host ports. For more information, please read the following [link](https://docs.k3s.io/networking/networking-services#service-load-balancer).
 
-To enable serviceLB, use the flag `--serviceLB` when deploying RKE2 
+:::tip
+When looking at the K3s documentation, use the label `svccontroller.rke2.cattle.io` instead of `svccontroller.k3s.cattle.io` where applicable.
+:::
+
+To enable serviceLB, use the flag `--serviceLB` when deploying RKE2.