docs(guides) Document namespace migration

Signed-off-by: Hristo Hristov <[email protected]>

content/en/docs/guides/namespace-migration-across-tenants.md

@@ -28,7 +28,7 @@ ns-bar   Active   28s   capsule.clastix.io/tenant=wind,kubernetes.io/metadata.na
 ns-foo   Active   36s   capsule.clastix.io/tenant=solar,kubernetes.io/metadata.name=ns-foo
 0df8e9ee-5f6f-40a4-897d-b80d349ca36f%
 ```
-Edit UID and labels to match the output of the previous commands.
+While altering ownerReferences name is sufficient on its own, it's highly recommended to edit the UID and labels to match the output of the previous commands.
 ```bash
 kubectl edit ns ns-foo 
 ```