amathislab/LEMONADE · Improve dataset card: Add task categories, paper link, and GitHub link

This PR improves the dataset card for the EPFL-Smart-Kitchen: Lemonade benchmark by:

Adding video-text-to-text to the task_categories in the metadata, reflecting the dataset's multi-modal nature (video and text for QA). The existing question-answering category is also retained as it accurately describes the benchmark's primary objective.
Including a direct link to the paper on Hugging Face (https://huggingface.co/papers/2506.01608) at the top of the dataset card for better visibility.
Adding a clear link to the main GitHub repository (https://github.com/amathislab/EPFL-Smart-Kitchen) at the top. The existing internal link in the "Content" section has also been cleaned up by removing the trailing #.