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.
raise StopIteration()
            except StopIteration:
                continue
            if not compare_unordered_lists(arg_choices, doc_choices):
                msg = "Argument '%s' in argument_spec" % arg
                if context:
                    msg += " found in %s" % " -> ".join(context)
                msg += " defines choices as (%r) but documentation defines choices as (%r)" % (arg_choices, doc_choices)
                self.reporter.error(
                    path=self.object_path,
                    code='doc-choices-do-not-match-spec',
                    msg=msg
                )
            doc_required = doc_options_arg.get('required', False)
            data_required = data.get('required', False)
            if (doc_required or data_required) and not (doc_required and data_required):
                msg = "Argument '%s' in argument_spec" % arg
                if context:
                    msg += " found in %s" % " -> ".join(context)
                if doc_required:
                    msg += " is not required, but is documented as being required"
                else:
                    msg += " is required, but is not documented as being required"
                self.reporter.error(
                    path=self.object_path,
                    code='doc-required-mismatch',
                    msg=msg
                )
            doc_elements = doc_options_arg.get('elements', None)
            doc_type = doc_options_arg.get('type', 'str')