Fix documentation deployment action

[simoninns]

Checklist

• I have searched the open pull requests to confirm this change has not already been submitted.
• My branch is up to date with the target branch.
• I have tested my changes and all existing tests pass.
• I have updated documentation where necessary.
• My code follows the project's coding standards (see CONTRIBUTING.md).

Description

Motivation

Related Issues

Changes Made

Testing

• All existing tests pass (pytest --output-on-failure)
• Tested manually with:
• New tests added for:

Screenshots (if applicable)

Additional Notes