Documentation update for labels operations on swarm/node (#53083)

* Update lib/ansible/modules/cloud/docker/docker_node.py
* Update lib/ansible/modules/cloud/docker/docker_swarm.py

Co-Authored-By: WojciechowskiPiotr <23406016+WojciechowskiPiotr@users.noreply.github.com>

lib/ansible/modules/cloud/docker/docker_node.py

@@ -30,6 +30,8 @@ options:
     labels:
         description:
             - User-defined key/value metadata that will be assigned as node attribute.
+            - Label operations in this module apply to the docker swarm node specified by I(hostname).
+              Use M(docker_swarm) module to add/modify/remove swarm cluster labels.
             - The actual state of labels assigned to the node when module completes its work depends on
               I(labels_state) and I(labels_to_remove) parameters values. See description below.
         type: dict

lib/ansible/modules/cloud/docker/docker_swarm.py

@@ -123,6 +123,8 @@ options:
   labels:
     description:
       - User-defined key/value metadata.
+      - Label operations in this module apply to the docker swarm cluster.
+        Use M(docker_node) module to add/modify/remove swarm node labels.
     type: dict
   signing_ca_cert:
     description: