Update README.md

README.md

@@ -4,4 +4,4 @@ The data is not present in the repository but is downloaded on the fly.
 
 There is an S2S (retrieve passages/sentences that are marked as relevant) and an 
 S2P (retrieve documents that contain relevant passages/sentences) version of the retrieval task. The respective corpuses are called `'corpus.sentences'` and `'corpus.documents'`.
-The qrel data is contained in the columns `'qrels.s2s'` and `'qrels.s2p'`, which hold space-separated lists of relevant documents.
+The qrel data is contained in `'qrels.s2s'` and `'qrels.s2p'`, which hold space-separated lists of relevant documents.