URL fix in pyproject.toml metadata

[howroyd]

Description

Fixed typo in GitHub URL which causes broken links on PyPI, etc.

Type of change

• [ Y ] Bug fix (non-breaking change which fixes an issue)

How has this been tested?

URL now takes you to this repo.

Documentation

Not applicable.

Checklist:

• [ NA ] My code follows the style guidelines of this project
• [ NA ] I have performed a self-review of my own code
• [ NA ] I have commented my code, particularly in hard-to-understand areas
• [ Y ] I have signed off all commits and they contain "Signed-off by: "
• [ NA ] I have made corresponding changes to the documentation
• [ NA ] My changes generate no new warnings
• [ NA ] I have added tests that prove my fix is effective or that my feature works
• [ NA ] New and existing unit tests pass locally with my changes
• [ NA ] Any dependent changes have been merged and published in downstream modules