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.
super(ModuleValidator, self).validate()
        if not self._python_module() and not self._powershell_module():
            self.reporter.error(
                path=self.object_path,
                code='invalid-extension',
                msg=('Official Ansible modules must have a .py '
                     'extension for python modules or a .ps1 '
                     'for powershell modules')
            )
            self._python_module_override = True
        if self._python_module() and self.ast is None:
            self.reporter.error(
                path=self.object_path,
                code='python-syntax-error',
                msg='Python SyntaxError while parsing module'
            )
            try:
                compile(self.text, self.path, 'exec')
            except Exception:
                self.reporter.trace(
                    path=self.object_path,
                    tracebk=traceback.format_exc()
                )
            return
        end_of_deprecation_should_be_removed_only = False
        if self._python_module():
            doc_info, docs = self._validate_docs()
            
            if docs and docs.get('deprecated', False):