Merge branch 'docs-align-k8s-info-ee' into 'master'

Docs: Align CE and EE k8s doc to match (EE Version)

See merge request gitlab-org/gitlab-ee!8809

doc/user/project/clusters/index.md

@@ -556,7 +556,7 @@ containers. To use this integration, you should deploy to Kubernetes using
 the deployment variables above, ensuring any pods you create are labelled with
 `app=$CI_ENVIRONMENT_SLUG`. GitLab will do the rest!
 
-## Integrating Amazon EKS cluster with GitLab
+### Integrating Amazon EKS cluster with GitLab
 
 - Learn how to [connect and deploy to an Amazon EKS cluster](eks_and_gitlab/index.md).