Add license

README.md

@@ -37,6 +37,7 @@ configs:
     path: data/shared/corpus_wikipedia_en-20251001_rewritten_partial.jsonl
   - split: ecommerce
     path: data/ecommerce/corpus_ecommerce_rewritten.jsonl
+license: cc-by-sa-4.0
 ---
 
 # TRQA Dataset
@@ -66,4 +67,4 @@ corpus = load_dataset("mahtaa/trqa", "corpus", split="wiki")
 | `qrels` | `wiki1_test`, `wiki1_validation`, `wiki2_test`, `wiki2_validation`, `ecommerce_test`, `ecommerce_validation` | Relevance judgments (TREC format) |
 | `corpus` | `wiki`, `wiki_partial`,`ecommerce` | Document collections |
 
-Note: wiki1 and wiki2 share the same Wikipedia corpus (`wiki` split for full corpus, or `wiki_partial` split for subsampled partial corpus).
+Note: wiki1 and wiki2 share the same Wikipedia corpus (`wiki` split for full corpus, or `wiki_partial` split for subsampled partial corpus).