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.
deprecated_alias['name'], deprecated_alias['version'])
                            msg += " error while comparing to version of %s" % version_of_what
                            self.reporter.error(
                                path=self.object_path,
                                code='invalid-deprecated-version',
                                msg=msg,
                            )
            aliases = data.get('aliases', [])
            if arg in aliases:
                msg = "Argument '%s' in argument_spec" % arg
                if context:
                    msg += " found in %s" % " -> ".join(context)
                msg += " is specified as its own alias"
                self.reporter.error(
                    path=self.object_path,
                    code='parameter-alias-self',
                    msg=msg
                )
            if len(aliases) > len(set(aliases)):
                msg = "Argument '%s' in argument_spec" % arg
                if context:
                    msg += " found in %s" % " -> ".join(context)
                msg += " has at least one alias specified multiple times in aliases"
                self.reporter.error(
                    path=self.object_path,
                    code='parameter-alias-repeated',
                    msg=msg
                )
            if not context and arg == 'state':
                bad_states = set(['list', 'info', 'get']) & set(data.get('choices', set()))