This PR enriches the dataset card for `meshchaninov/cosmos_rocstories` by adding:
- A clear introduction and description based on the paper's abstract.
- A link to the associated paper: https://huggingface.co/papers/2506.21170.
- A link to the official GitHub repository: https://github.com/MeshchaninovViacheslav/cosmos.
- Relevant `task_categories: ['text-generation']` and `tags: ['diffusion-models', 'latent-space']` to the metadata for improved discoverability.
- A "Sample Usage" section, directly leveraging the text generation command provided in the GitHub README, which demonstrates how models trained with this dataset are used.
