Failed to port forward to CRD when getting started

Hi All,

I am trying the latest getting started doc and failed to do the port-forwarding.

In the latest version of argo events, there is no pod but CRD instead.

I tried to port forward to the CRD instance but failed with the following error messages.

`root@building-block-050-1D:~# kubectl -n argo-events port-forward Gateway/webhook 12000:12000
error: no kind "Gateway" is registered for version "argoproj.io/v1alpha1" in scheme "k8s.io/client-go/kubernetes/scheme/register.go:65"
root@building-block-050-1D:~# kubectl -n argo-events port-forward Sensor/webhook 12000:12000
error: no kind "Sensor" is registered for version "argoproj.io/v1alpha1" in scheme "k8s.io/client-go/kubernetes/scheme/register.go:65"`

Please help.

First verify that this issue belongs to cfssl, since the report concerns Argo Events and Kubernetes custom resources rather than naming any cfssl file or test. Reproduce the kubectl port-forward commands from the getting-started documentation; done would require a confirmed correction to the documented procedure or clarification that the report belongs elsewhere.

Written by the indexing model from the issue text.