Update README.md

README.md

@@ -198,6 +198,6 @@ The dataset is available under the [Apache 2.0 license](https://www.apache.org/l
       eprint={},
       archivePrefix={arXiv},
       primaryClass={cs.CL},
-      url={}, 
+      url={https://arxiv.org/pdf/2603.07886}, 
 }
 ```