fix writing

README.md

@@ -253,8 +253,8 @@ RedPajama-V2 is an open dataset for training large language models and includes
 | minhash_signature_1.0                          | Banded minhash signature of the document, for fuzzy deduplication at Jaccard similarity 1.0. The signature is based on 128 hash functions and grouped into 1 band and 128 rows for LSH.                                                                                                                                                                                                                              | Deduplication    |
 
 
-The quality signal `rps_doc_ut1_blacklist` is given by a categorical id indicating the combination of UT1 blacklisted 
-domain categories the domain of the document belongs to. The mapping `id -> [category_1, ..., category_k]` is given in
+The quality signal `rps_doc_ut1_blacklist` is given by a categorical id indicating the UT1 blacklisted 
+domain categories to which the domain of the document belongs. The mapping `id -> [category_1, ..., category_k]` is given in
 `ut1_domain_categories.json`. It can also be downloaded from this [link](https://data.together.xyz/redpajama-data-v2/v1.0.0/artifacts/ut1_domain_categories.json).
 
 #### Raw Document and Token Counts (`head_middle`)