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.
msg += " found in %s" % " -> ".join(context)
                msg += " has repeated terms in requirements"
                self.reporter.error(
                    path=self.object_path,
                    code='required_if-requirements-collision',
                    msg=msg,
                )
            if not set(requirements) <= set(spec):
                msg = "required_if"
                if context:
                    msg += " found in %s" % " -> ".join(context)
                msg += " contains terms in requirements which are not part of argument_spec: %s" % ", ".join(sorted(set(requirements).difference(set(spec))))
                self.reporter.error(
                    path=self.object_path,
                    code='required_if-requirements-unknown',
                    msg=msg,
                )
            key = check[0]
            if key not in spec:
                msg = "required_if"
                if context:
                    msg += " found in %s" % " -> ".join(context)
                msg += " must have its key %s in argument_spec" % key
                self.reporter.error(
                    path=self.object_path,
                    code='required_if-unknown-key',
                    msg=msg,
                )
                continue
            if key in requirements: