Fix broken cyder link on software page

[nsryan2]

Summary of changes

Changes the docs link for Cyder to direct to the README instead of a depreciated link.

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)
• [x] I have read the CONTRIBUTING document.
• [x] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [ ] I have added tests to cover my changes.
• [x] All new and existing tests passed.

Associated Issues and PRs

• Issue: closes #272

Associated Developers

• Dev: n/a

Checklist for Reviewers

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