Fix task_categories tag to a valid Hub value

Update dataset card for EMNLP 2026 Vision-Braille release

remove extra long samples, delete all braille text that are 3.2 longer than the Chinese text and Keep only data pairs where braille length < 500 AND chinese text length < 150

update the dataset, remove the lables and spaces

Update README.md

Update README.md

Update README.md

Update README.md

Update README.md

Update README.md

Update README.md

Upload dataset

initial commit