Update README.md

README.md

@@ -60,6 +60,7 @@ configs:
   data_files:
   - split: train
     path: data/train-*
+license: cc-by-4.0
 ---
 
 # Dataset Card for dwb2023/family-target-interaction-ligand-gtopdb
@@ -190,4 +191,4 @@ Here's a glossary for the dataset `dwb2023/family_target_ligand_gtopdb` based on
 
 - **reference_doi**: The Digital Object Identifier (DOI) for the reference, which is a persistent and unique identifier for the document that allows for reliable linking to its online location.
 
-- **reference_pmc_id**: The unique identifier for the reference in PubMed Central (PMC), which is a free full-text archive of biomedical and life sciences journal literature at the U.S. National Institutes of Health's National Library of Medicine (NIH/NLM).
+- **reference_pmc_id**: The unique identifier for the reference in PubMed Central (PMC), which is a free full-text archive of biomedical and life sciences journal literature at the U.S. National Institutes of Health's National Library of Medicine (NIH/NLM).