This PR improves the dataset card by:
- Linking the dataset to the original paper: [CoMeT: Collaborative Memory Transformer for Efficient Long Context Modeling](https://huggingface.co/papers/2602.01766).
- Adding a link to the official GitHub repository.
- Specifying the `summarization` task category based on the SCROLLS benchmark usage described in the paper.
- Providing usage instructions for tokenization and training as found in the official repository.
