Adding License information

README.md

@@ -58,15 +58,27 @@ You can load mMARCO dataset by choosing a specific language. We include training
 {'id': 100, 'text': 'Antonín Dvorák (1841-1904) Antonin Dvorak era filho de açougueiro, mas ele não seguiu o negócio de seu pai. Enquanto ajudava seu pai a meio tempo, estudou música e se formou na Escola de Órgãos de Praga em 1859.'}
 ```
 
+### Licensing Information
+
+This dataset is released under [Apache license 2.0](https://www.apache.org/licenses/).
+{ license | default("[More Information Needed]", true)}}
 
 # Citation Information
 ```
-@misc{bonifacio2021mmarco,
-      title={mMARCO: A Multilingual Version of MS MARCO Passage Ranking Dataset}, 
-      author={Luiz Henrique Bonifacio and Vitor Jeronymo and Hugo Queiroz Abonizio and Israel Campiotti and Marzieh Fadaee and  and Roberto Lotufo and Rodrigo Nogueira},
-      year={2021},
-      eprint={2108.13897},
-      archivePrefix={arXiv},
-      primaryClass={cs.CL}
+@article{DBLP:journals/corr/abs-2108-13897,
+  author       = {Luiz Bonifacio and
+                  Israel Campiotti and
+                  Roberto de Alencar Lotufo and
+                  Rodrigo Frassetto Nogueira},
+  title        = {mMARCO: {A} Multilingual Version of {MS} {MARCO} Passage Ranking Dataset},
+  journal      = {CoRR},
+  volume       = {abs/2108.13897},
+  year         = {2021},
+  url          = {https://arxiv.org/abs/2108.13897},
+  eprinttype    = {arXiv},
+  eprint       = {2108.13897},
+  timestamp    = {Mon, 20 Mar 2023 15:35:34 +0100},
+  biburl       = {https://dblp.org/rec/journals/corr/abs-2108-13897.bib},
+  bibsource    = {dblp computer science bibliography, https://dblp.org}
 }
 ```