Update README.md

README.md

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-This is the official code for **HistRED: A Historical Document-Level Relation Extraction Dataset** (ACL 2023, [ACL-anthology]((https://aclanthology.org/2023.acl-long.180/)), [arXiv](https://arxiv.org/abs/2307.04285)).
+This is the official code for **HistRED: A Historical Document-Level Relation Extraction Dataset** (ACL 2023, [ACL-anthology](https://aclanthology.org/2023.acl-long.180/), [arXiv](https://arxiv.org/abs/2307.04285)).
 
 Note that this dataset is open under [CC BY-NC-ND 4.0](https://creativecommons.org/licenses/by-nc-nd/4.0/) license. 
 The same code (except the dataset) can be seen in [Github](https://github.com/dudrrm/HistRED/tree/main)