This PR improves the dataset card by:
- Adding the `text-to-video` task category to the metadata.
- Specifying the `cc-by-nc-4.0` license.
- Linking the TurboDiffusion paper ("TurboDiffusion: Accelerating Video Diffusion Models by 100-200 Times") and its GitHub repository.
- Adding a sample usage section for downloading the data via Git LFS and referencing the sharded data structure, as found in the official documentation.
- Including citations for both TurboDiffusion and rCM.
