return_common: Clean up parameter types (#52524)

This PR includes:
- Parameter types added
- Copyright format fixes
- Short license statement

lib/ansible/plugins/doc_fragments/return_common.py

@@ -1,45 +1,32 @@
-# Copyright (c) 2016 Ansible, Inc
-#
-# This file is part of Ansible
-#
-# Ansible is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# Ansible is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
+# -*- coding: utf-8 -*-
+
+# Copyright: (c) 2016, Ansible, Inc
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
 
 
 class ModuleDocFragment(object):
-
     # Standard documentation fragment
-    RETURN = '''
+    RETURN = r'''
 changed:
   description: Whether the module affected changes on the target.
   returned: always
   type: bool
-    sample: False
+  sample: false
 failed:
   description: Whether the module failed to execute.
   returned: always
   type: bool
-    sample: True
+  sample: true
 msg:
   description: Human-readable message.
   returned: as needed
-    type: string
-    sample: "all ok"
+  type: str
+  sample: all ok
 skipped:
   description: Whether the module was skipped.
   returned: always
   type: bool
-    sample: False
+  sample: false
 results:
   description: List of module results,
   returned: when using a loop.
@@ -48,6 +35,6 @@ results:
 exception:
   description: Optional information from a handled error.
   returned: on some errors
-    type: string
-    sample: 'Unknown error'
+  type: str
+  sample: Unknown error
 '''