Update README.md

README.md

@@ -19,4 +19,6 @@ size_categories:
 
 `legal-mc4-pl` is extracted from [legal-mc4](https://huggingface.co/datasets/joelito/legal-mc4) multilang dataset.
 
-This dataset is jsonl format and contains only polish texts, thanks for [joelito](https://huggingface.co/joelito).
+Originally `legal-mc4` is in _parquet_ format, into this dataset we provided `jsonl` format.
+
+This dataset contains only polish texts, thanks for [joelito](https://huggingface.co/joelito) for parquet `legal-mc4` dataset.