Fix documentation after renaming notebooks

[wreise]

Types of changes

• [X] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Description Following #529, apply the appropriate changes to the documentation.

Screenshots (if appropriate)

Any other comments?

Checklist

• [X] I have read the guidelines for contributing.
• [X] My code follows the code style of this project. I used flake8 to check my Python changes.
• [X] My change requires a change to the documentation.
• [X] I have updated the documentation accordingly.
• [ ] I have added tests to cover my changes.
• [X] All new and existing tests passed. I used pytest to check this on Python tests.

[ulupo]

Hehe, this is why we need documentation generation as part of the CI :)

[wreise]

Hehe, this is why we need documentation generation as part of the CI :)

There is even the tick in the pre-merge checklist :see_no_evil: !