K8s: add container runtime note (#1146)

* add container runtime note

* Update content/operate/kubernetes/reference/supported_k8s_distributions.md

* Update content/operate/kubernetes/reference/supported_k8s_distributions.md

Co-authored-by: Zvi Cahana <zcahana@users.noreply.github.com>

---------

Co-authored-by: Zvi Cahana <zcahana@users.noreply.github.com>

Author: kaitlynmichael

content/operate/kubernetes/reference/supported_k8s_distributions.md

@@ -12,6 +12,8 @@ weight: 30
 
 Each release of Redis Enterprise for Kubernetes is thoroughly tested against a set of Kubernetes distributions. The table below lists Redis Enterprise for Kubernetes versions and the Kubernetes distributions they support.
 
+{{<note>}}Each platform is tested with its default configuration, including storage, network, security, and container runtime components.”{{</note>}}
+
 <span title="Check mark icon">&#x2705;</span> Supported – This distribution is supported for this version of Redis Enterprise Software for Kubernetes.
 
 <span title="Deprecation warning" class="font-serif">:warning:</span> Deprecated – This distribution is still supported for this version of Redis Enterprise Software for Kubernetes, but support will be removed in a future release.