Fixing paper link (#1)

- Fixing paper link (2b72cf4be489c63a41c0f1594a8b65fa224f7a3b)


Co-authored-by: Oren Kalinsky <[email protected]>

README.md

@@ -48,6 +48,6 @@ paperswithcode_id: wikisum
 
 - **Homepage:** https://registry.opendata.aws/wikisum/
 - **Repository:** https://github.com/tensorflow/tensor2tensor/tree/master/tensor2tensor/data_generators/wikisum
-- **Paper:** [Generating Wikipedia by Summarizing Long Sequences](https://arxiv.org/abs/1801.10198)
+- **Paper:** [WikiSum: Coherent Summarization Dataset for Efficient Human-Evaluation](https://aclanthology.org/2021.acl-short.28/)
 - **Leaderboard:** [More Information Needed]
 - **Point of Contact:** [nachshon](mailto:[email protected])