Update files from the datasets library (from 1.3.0)

Release notes: https://github.com/huggingface/datasets/releases/tag/1.3.0

README.md

@@ -43,6 +43,7 @@ task_ids:
   - [Dataset Curators](#dataset-curators)
   - [Licensing Information](#licensing-information)
   - [Citation Information](#citation-information)
+  - [Contributions](#contributions)
 
 ## Dataset Description
 
@@ -178,3 +179,7 @@ The data is split into train, validation and test set. The split sizes are as fo
       url = {https://cic.unb.br/~teodecampos/LeNER-Br/},
 }	
 ```
+
+### Contributions
+
+Thanks to [@jonatasgrosman](https://github.com/jonatasgrosman) for adding this dataset.