https://github.com/ansible/ansible/blob/1706d35fc476e36fcced25435c2f1c2401536376/test/lib/ansible_test/_util/controller/sanity/validate-modules/validate_modules/main.py#L414

When a module is in place to provide documentation for an action, it should be allowed to have a doc string.

Without a docstring users of pydocstring will need to suppress:

```
************* Module plugins.modules.git_away
plugins/modules/git_away.py:1:0: C0114: Missing module docstring (missing-module-docstring)
************* Module plugins.modules.git_here
plugins/modules/git_here.py:1:0: C0114: Missing module docstring (missing-module-docstring)
```

With a doc string the module is treated as a "real" module and fails sanity:

```
ansible-module-not-initialized: Execution of the module did not result in initialization of AnsibleModule
```

PEP257 suggests modules should have a docstring, and is generally considered a good practice to inform future developers of the purpose of the file and can be used for documentation generation as well.
path=self.object_path,
                            code='missing-return',
                            msg='No RETURN provided'
                        )
                    else:
                        self.reporter.warning(
                            path=self.object_path,
                            code='missing-return-legacy',
                            msg='No RETURN provided'
                        )
            else:
                data, errors, traces = parse_yaml(doc_info['RETURN']['value'],
                                                  doc_info['RETURN']['lineno'],
                                                  self.name, 'RETURN')
                if data:
                    add_collection_to_versions_and_dates(data, self.collection_name,
                                                         is_module=self.plugin_type == 'module', return_docs=True)
                self._validate_docs_schema(data,
                                           return_schema(for_collection=bool(self.collection), plugin_type=self.plugin_type),
                                           'RETURN', 'return-syntax-error')
                for error in errors:
                    self.reporter.error(
                        path=self.object_path,
                        code='return-syntax-error',
                        **error
                    )
                for trace in traces:
                    self.reporter.trace(
                        path=self.object_path,
                        tracebk=trace