Update hc4-corpus.py

hc4-corpus.py

@@ -21,11 +21,16 @@ import datasets
 from dataclasses import dataclass
 
 _CITATION = '''
-@article{mrtydi,
-      title={{Mr. TyDi}: A Multi-lingual Benchmark for Dense Retrieval}, 
-      author={Xinyu Zhang and Xueguang Ma and Peng Shi and Jimmy Lin},
-      year={2021},
-      journal={arXiv:2108.08787},
+@article{Lawrie2022HC4,
+  author = {Dawn Lawrie and James Mayfield and Douglas W. Oard and Eugene Yang},
+  title = {HC4: A New Suite of Test Collections for Ad Hoc CLIR},
+  booktitle = {{Advances in Information Retrieval. 44th European Conference on IR Research (ECIR 2022)},
+  year = {2022},
+  month = apr,
+  publisher = {Springer},
+  series = {Lecture Notes in Computer Science},
+  site = {Stavanger, Norway},
+  url = {https://arxiv.org/abs/2201.09992}
 }
 '''