Update UWGeoTutorials.rst

[arijitlaik]

fixing some missing links, pointed out to me by a user

PR Checklist

• [x] I have read the CONTRIBUTING.rst document.
• [x] I have updated the docstrings accordingly.
• [ ] I have updated CHANGES.md.
• [x] I have added tests which give complete coverage for my changes.
• [x] I have provided a usage example for my changes.
• [x] All new and existing tests pass.