docs: fix package repository links

[SufianTA]

Summary

• update package metadata links from the stale Medea-1.0 URL to the current mims-harvard/Medea repository
• keep setup.py and pyproject.toml consistent

Validation

• python -m compileall medea main.py utils.py
• python -c "import pathlib; text=pathlib.Path('pyproject.toml').read_text(encoding='utf-8'); assert 'Medea-1.0' not in text; assert 'https://github.com/mims-harvard/Medea' in text; print('metadata links ok')"
• git diff --check