Generate: minor docstring fix
# What does this PR do?

Fixes this:
<img width="816" alt="Screenshot 2022-10-21 at 22 12 40" src="https://user-images.githubusercontent.com/12240844/197289701-0092c00a-2aec-4c72-96ba-fb2df4ce14b1.png">

_The documentation is not available anymore as the PR was closed or merged._<|||||>Fixed
<img width="834" alt="Screenshot 2022-10-21 at 22 28 30" src="https://user-images.githubusercontent.com/12240844/197291473-5c5c8984-d553-4e7c-85a3-94a254e452f8.png">
