doc(openshift): rework structure (#3873)

* doc(openshift): rework structure

* doc(openshift): wording

* doc(openshift): replace Accordions by Tabs

* doc(openshift): fix links

* doc(openshift): fix format

* doc(openshift): fix build

* doc(openshift): update support dates

* doc(openshift): update support dates

* doc(openshift): fix broken links

* doc(openshift): fix instructions

* doc(openshift): apply suggestions from pr

* doc(openshift): fix typo

* doc(openshift): apply suggestions

* doc(openshift): add details about certs syntax

* doc(openshift): add details about certs syntax

* doc(openshift): update details for mac usage

docs/reference/supported-environments.md

@@ -56,7 +56,7 @@ The following are tested and supported deployment options for Kubernetes, Docker
   - [Amazon EKS](/self-managed/setup/deploy/amazon/amazon-eks/amazon-eks.md)
   - [Microsoft AKS](/self-managed/setup/deploy/azure/microsoft-aks.md)
   - [Google GKE](/self-managed/setup/deploy/gcp/google-gke.md)
-- [Red Hat OpenShift](/self-managed/setup/deploy/openshift/redhat-openshift.md) (4.11+)
+- [Red Hat OpenShift](/self-managed/setup/deploy/openshift/redhat-openshift.md)
 - [Docker](/self-managed/setup/deploy/other/docker.md) (`linux/amd64`)
 - [Manual](/self-managed/setup/deploy/local/manual.md)