updated url

Author: susierao

README.md

@@ -43,6 +43,7 @@ To cite TableParser, refer to these items:
   title={DocParser: Hierarchical Document Structure Parsing from Renderings},
   author={Rausch, Johannes and Martinez, Octavio and Bissig, Fabian and Zhang, Ce and Feuerriegel, Stefan},
   booktitle={35th AAAI Conference on Artificial Intelligence (AAAI-21)(virtual)},
+  url={https://arxiv.org/abs/1911.01702},
   year={2021}
 }
 ```
@@ -51,6 +52,7 @@ To cite TableParser, refer to these items:
   title={TableParser: Automatic Table Parsing with Weak Supervision from Spreadsheets},
   author={Rao, Susie Xi and Rausch, Johannes and Egger, Peter and Zhang, Ce},
   booktitle={Scientific Document Understanding Workshop (\tt SDU{@}AAAI-22)(virtual)},
+  url={https://arxiv.org/abs/2201.01654},
   year={2022}
 }
-```
+```