docs: k8s dry run section added

docs/k8s.rst

@@ -116,6 +116,21 @@ All non-persisting data will be deleted, and then re-created.
 Common tasks
 ------------
 
+### Using `tutor k8s apply` with Dry Run
+
+The `tutor k8s apply` command serves as a wrapper around `kubectl apply`, allowing you to easily apply your Kubernetes resource configurations stored in `$(tutor config printroot)/env/k8s`. To apply your configurations, simply run::
+
+    tutor k8s apply
+
+Before applying changes, you can validate your configurations without making any modifications by using the dry-run option with the server-side validation. Run::
+
+    tutor k8s apply --dry-run=server --validate=true
+
+- `--dry-run=server`: This option simulates the application of configurations on the server-side, allowing you to see how Kubernetes would interpret your changes.
+- `--validate=true`: This validates your manifests against Kubernetes API standards, helping to catch any errors before applying them.
+
+Utilizing the dry-run feature ensures a more robust deployment process for your Open edX platform on Kubernetes.
+
 Executing commands inside service pods
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~