This PR improves the dataset card by:
- Adding a descriptive introduction based on the paper's abstract.
- Linking to the associated paper ([https://huggingface.co/papers/2506.21170](https://huggingface.co/papers/2506.21170)) and the official GitHub repository ([https://github.com/MeshchaninovViacheslav/cosmos](https://github.com/MeshchaninovViacheslav/cosmos)).
- Including the full paper abstract for comprehensive context.
- Adding `task_categories: ['text-generation']` and `language: ['en']` to the metadata for better discoverability.
- Providing a "Sample Usage" section with code snippets from the GitHub README for dataset preparation and text generation, demonstrating how this dataset is integrated and used within the COSMOS framework.
- Adding the academic citation for the paper.
