Change the paper urls to include the papers in huggingface paper (#2)

- Change the paper urls to include the papers in huggingface paper (5c780de915b184b1bfa6b0975f6a10100085eba2)


Co-authored-by: Hao Zhu <[email protected]>

README.md

@@ -117,7 +117,7 @@ dataset_info:
 
 - **Homepage:** [GitHub Page](https://thunlp.github.io/)
 - **Repository:** [GitHub](https://github.com/thunlp/FewRel)
-- **Paper:** [FewRel](https://www.aclweb.org/anthology/D18-1514.pdf), [FewRel 2.0](https://www.aclweb.org/anthology/D19-1649.pdf)
+- **Paper:** [FewRel](https://arxiv.org/abs/1810.10147), [FewRel 2.0](https://arxiv.org/abs/1910.07124)
 - **Leaderboard:** [GitHub Leaderboard](https://thunlp.github.io/fewrel.html)
 - **Point of Contact:** [Needs More Information]