k8s: Add k8s prod readiness checklist (#1352)

Co-authored-by: David Yu <yongshinyu@gmail.com>
Co-authored-by: Paulo Borges <paulohtb6@gmail.com>
Co-authored-by: Joyce Fee <102751339+Feediver1@users.noreply.github.com>

Author: 4 people

modules/ROOT/nav.adoc

@@ -75,6 +75,7 @@
 **** xref:deploy:redpanda/kubernetes/k-requirements.adoc[Requirements and Recommendations]
 **** xref:deploy:redpanda/kubernetes/k-tune-workers.adoc[Tune Worker Nodes]
 **** xref:deploy:redpanda/kubernetes/k-production-deployment.adoc[Deploy Redpanda]
+**** xref:deploy:redpanda/kubernetes/k-production-readiness.adoc[]
 **** xref:deploy:redpanda/kubernetes/k-high-availability.adoc[High Availability]
 *** xref:deploy:redpanda/manual/index.adoc[Linux]
 **** xref:deploy:redpanda/manual/production/requirements.adoc[Hardware and Software Requirements]

modules/deploy/pages/redpanda/kubernetes/k-production-deployment.adoc

@@ -777,6 +777,10 @@ include::deploy:partial$kubernetes/guides/troubleshoot.adoc[leveloffset=+1]
 
 == Next steps
 
+After deploying Redpanda, validate your production readiness:
+
+- xref:deploy:redpanda/kubernetes/k-production-readiness.adoc[Production readiness checklist] - Comprehensive validation of your deployment against production standards
+
 See the xref:manage:kubernetes/index.adoc[Manage Kubernetes topics] to learn how to customize your deployment to meet your needs.
 
 include::shared:partial$suggested-reading.adoc[]