[Feature Request] Enhance README Display with GitHub-Style Formatting for Better User Experience

Currently, README files on model pages are rendered with basic HTML styling that lacks readability and visual appeal. The text appears plain with poor spacing, no syntax highlighting, and minimal formatting.

**Request**: Implement GitHub-style README rendering with enhanced typography, proper spacing, syntax-highlighted code blocks, and responsive design across all model pages. This would significantly improve documentation readability, create a more professional appearance, and provide consistent user experience throughout the platform.

**Benefits**: Better user engagement, improved readability, and consistent formatting across all models.

**Example**: https://hivelab.biochemistry.gwu.edu/predictmod/models/Ovarian-Cancer-RNAseq