fixed inconsistencies in sample paper content and naming, #6651

[brian-cch]

fixed inconsistencies in sample paper content and naming as mentioned in #6651, added second paper for contrasting purposes, showing off capabilities to selectively present information based on user needs

Link to Issue or Description of Change

1. Link to an existing issue (if applicable):
#6651

• Closes: Incorrectly labels the Gemini 1.5 paper as a Gemma research paper #6651

Checklist

• [1] I have read the CONTRIBUTING.md document.
• [1] I have performed a self-review of my own code.
• [1] I have commented my code, particularly in hard-to-understand areas.
• [1] I have added tests that prove my fix is effective or that my feature works.
• [1] New and existing unit tests pass locally with my changes.
• [1] I have manually tested my changes end-to-end.
• [1] Any dependent changes have been merged and published in downstream modules.