More true/false normalization. (#597)

plugins/inventory/docker_swarm.py

@@ -131,7 +131,7 @@ client_cert: /somewhere/cert.pem
 # Example using constructed features to create groups and set ansible_host
 plugin: community.docker.docker_swarm
 docker_host: tcp://my-docker-host:2375
-strict: False
+strict: false
 keyed_groups:
   # add for example x86_64 hosts to an arch_x86_64 group
   - prefix: arch

plugins/modules/docker_plugin.py

@@ -65,7 +65,7 @@ options:
   force_remove:
     description:
       - Remove even if the plugin is enabled.
-    default: False
+    default: false
     type: bool
 
   enable_timeout:

plugins/modules/docker_swarm_service.py

@@ -774,7 +774,7 @@ rebuilt:
   description:
     - True if the service has been recreated (removed and created)
   type: bool
-  sample: True
+  sample: true
 '''
 
 EXAMPLES = '''