This PR updates the dataset card for TSAIA to:
- Add `task_categories: time-series-forecasting` to the metadata for improved discoverability.
- Include a direct link to the paper: [When LLM Meets Time Series: Can LLMs Perform Multi-Step Time Series Reasoning and Inference](https://huggingface.co/papers/2509.01822) at the top of the card.
- Provide a detailed "About" section using the paper's abstract, giving users immediate context on the dataset's purpose and scope.
- Replace the generic "Usage" section with a comprehensive "Sample Usage" section, featuring code snippets directly from the GitHub README. This guides users through environment setup, data preparation, and running experiments with the dataset.
These enhancements will make the dataset more accessible, understandable, and user-friendly for researchers and practitioners on the Hugging Face Hub.
