Update docs

Signed-off-by: fpetkovski <filip.petkovsky@gmail.com>

docs/configuration/configuration.md

@@ -1707,8 +1707,9 @@ namespaces:
 # Optional label and field selectors to limit the discovery process to a subset of available resources.
 # See https://kubernetes.io/docs/concepts/overview/working-with-objects/field-selectors/
 # and https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/ to learn more about the possible
-# filters that can be used. Endpoints role supports pod, service and endpoints selectors, other roles
-# only support selectors matching the role itself (e.g. node role can only contain node selectors).
+# filters that can be used. The endpoints role supports pod, service and endpoints selectors.
+# The pod role supports node selectors when configured with `attach_metadata: {node: true}`.
+# Other roles only support selectors matching the role itself (e.g. node role can only contain node selectors).
 
 # Note: When making decision about using field/label selector make sure that this
 # is the best approach - it will prevent Prometheus from reusing single list/watch