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='doc-type-does-not-match-spec',
                        msg=msg
                    )
            else:
                if doc_type is None:
                    msg = "Argument '%s' in argument_spec" % arg
                    if context:
                        msg += " found in %s" % " -> ".join(context)
                    msg += " uses default type ('str') but documentation doesn't define type"
                    self.reporter.error(
                        path=self.object_path,
                        code='doc-missing-type',
                        msg=msg
                    )
                elif doc_type != 'str':
                    msg = "Argument '%s' in argument_spec" % arg
                    if context:
                        msg += " found in %s" % " -> ".join(context)
                    msg += " implies type as 'str' but documentation defines as %r" % doc_type
                    self.reporter.error(
                        path=self.object_path,
                        code='implied-parameter-type-mismatch',
                        msg=msg
                    )
            doc_choices = []
            try:
                for choice in doc_options_arg.get('choices', []):
                    try:
                        with CaptureStd():