Update README.md

Shorten About section

Simplify intro line

Add About section with Figure 1

Rename dataset title

Mark as official repository; paper accepted to AACL 2026

Add CC BY-SA 4.0 license and source attribution

Remove raw TSV files; keep JSONL only

Rename pair_id to target_index and document it as WiC-style target word positions

Add arXiv link to dataset card

Add coarse-grained and fine-grained WiC datasets (WiC is Not WSD)

initial commit