That seems - more or less - as the correct thing to do. Specifically:
- Create an account on invent.kde.org
- Fork the project
develop-kde-org
with your account. - Clone the resulting fork, which will be a repository you own.
- Run the testing setup as documented in the
README
. - Fix the documentation and test locally.
- Commit and push your changes.
- Go to your project on invent.kde.org and and submit a merge request.
Good luck!