Clean up module documentation (#36909)

* Clean up module documentation

This PR includes:
- Removal of `default: None` (and variations)
- Removal of `required: false`
- Fixing booleans and `type: bool` where required

* Fix remaining (new) validation issues

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

@@ -48,20 +48,17 @@ options:
     description:
       - "The email address for the registry account. NOTE: private registries may not require this,
         but Docker Hub requires it."
-    default: None
   reauthorize:
-    required: False
     description:
       - Refresh exiting authentication found in the configuration file.
-    default: no
-    choices: ['yes', 'no']
+    type: bool
+    default: 'no'
     aliases:
       - reauth
   config_path:
     description:
       - Custom path to the Docker CLI configuration file.
     default: ~/.docker/config.json
-    required: False
     aliases:
       - self.config_path
       - dockercfg_path
@@ -74,7 +71,6 @@ options:
       - docker does not support 'logout' with a custom config file.
     choices: ['present', 'absent']
     default: 'present'
-    required: False
 
 extends_documentation_fragment:
     - docker