Mention label copying in the docs (#2558)

* Mention label copying in the docs

* Update site/content/en/docs/concepts/workload.md

Co-authored-by: Aldo Culquicondor <1299064+alculquicondor@users.noreply.github.com>

* Update site/content/en/docs/concepts/workload.md

Co-authored-by: Aldo Culquicondor <1299064+alculquicondor@users.noreply.github.com>

* Explain the default behaviour

* Update site/content/en/docs/concepts/workload.md

Co-authored-by: Michał Woźniak <mimowo@users.noreply.github.com>

---------

Co-authored-by: Aldo Culquicondor <1299064+alculquicondor@users.noreply.github.com>
Co-authored-by: Michał Woźniak <mimowo@users.noreply.github.com>

site/content/en/docs/concepts/workload.md

@@ -151,6 +151,11 @@ status:
 When a Workload deactivated by All-or-nothing with ready Pods is re-activated,
 the requeueState (`.status.requeueState`) will be reset to null.
 
+## Replicate labels from Jobs into Workloads
+You can configure Kueue to copy labels, at Workload creation, into the new Workload from the underlying Job or Pod objects. This can be useful for Workload identification and debugging.
+You can specify which labels should be copied by setting the `labelKeysToCopy` field in the configuration API (under `integrations`). By default, Kueue does not copy any Job or Pod label into the Workload. 
+
+
 ## What's next
 
 - Learn about [workload priority class](/docs/concepts/workload_priority_class).