fixed backup and validate fragments

lib/ansible/utils/module_docs_fragments/backup.py

@@ -20,6 +20,7 @@ class ModuleDocFragment(object):
 
     # Standard documentation fragment
     DOCUMENTATION = '''
+options:
     backup:
         description:
           - Create a backup file including the timestamp information so you can get

lib/ansible/utils/module_docs_fragments/validate.py

@@ -20,6 +20,7 @@ class ModuleDocFragment(object):
 
     # Standard documentation fragment
     DOCUMENTATION = '''
+options:
     validate:
       required: false
       description: