add link to AWS blog post on tutorials page

this was an action resulting from the biweekly meeting on 2021-11-17

Signed-off-by: Ashley Davis <ashley.davis@jetstack.io>

content/en/docs/tutorials/_index.md

@@ -25,6 +25,7 @@ for you to learn from. Take a look!
 
 ### External Tutorials
 
+- A great AWS blog post on using cert-manager for end-to-end encryption in EKS. See [Setting up end-to-end TLS encryption on Amazon EKS](https://aws.amazon.com/blogs/containers/setting-up-end-to-end-tls-encryption-on-amazon-eks-with-the-new-aws-load-balancer-controller/)
 - A full cert-manager installation demo on a GKE Cluster. See [How-To: Automatic SSL Certificate Management for your Kubernetes Application Deployment](https://medium.com/contino-engineering/how-to-automatic-ssl-certificate-management-for-your-kubernetes-application-deployment-94b64dfc9114)
 - cert-manager installation on GKE Cluster using Workload Identity. See [Kubernetes, ingress-nginx, cert-manager & external-dns](https://blog.atomist.com/kubernetes-ingress-nginx-cert-manager-external-dns/)
 - A video tutorial for beginners showing cert-manager in action. See [Free SSL for Kubernetes with cert-manager](https://www.youtube.com/watch?v=hoLUigg4V18)