Update helm notes to match getting started for port-forward

[tiffanyfay]

Description of the change

Updates the NOTES.txt for the Helm notes to match the getting started for port-forwarding.
Switching port forwarding from selecting the first pod to forwarding using the service. It should match the following:

kubectl port-forward -n kubeapps svc/kubeapps 8080:80

Kubeapps can be accessed via port 80 on the following DNS name from within your cluster:

   kubeapps.kubeapps.svc.cluster.local

To access Kubeapps from outside your K8s cluster, follow the steps below:

1. Get the Kubeapps URL by running these commands:
   echo "Kubeapps URL: http://127.0.0.1:8080"
   kubectl port-forward --namespace kubeapps service/kubeapps 8080:80

2. Open a browser and access Kubeapps using the obtained URL.
> k -n kubeapps get svc
NAME                              TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)     AGE
kubeapps                      ClusterIP   10.107.22.58     <none>        80/TCP      53s
kubeapps-internal-assetsvc    ClusterIP   10.107.211.12    <none>        8080/TCP    53s
kubeapps-internal-dashboard   ClusterIP   10.100.149.241   <none>        8080/TCP    53s
kubeapps-internal-kubeops     ClusterIP   10.107.21.128    <none>        8080/TCP    53s
kubeapps-mongodb              ClusterIP   10.108.66.167    <none>        27017/TCP   53s

Tested by installing the helm chart.

Benefits

The helm notes will be updated and match the getting started for setting up port-forwarding.

Possible drawbacks

None

Applicable issues

Additional information

TODO: This has not been verified if it works correctly yet.

[andresmgot]

Thanks! It works now