Move EKS example under the Kubernetes folder

[d3rp3tt3]

In our other examples, we nest examples under the top-level platform type. For example, Google Cloud Run is container orchestration that is not Kuberentes, so it has its own top-level category. This is also the same for ECS. Since AWS EKS is Kubernetes, I think it makes sense to nest it under the Kubernetes folder.

Tagging @topfunky - What do you think?