Update README.md

README.md

@@ -90,7 +90,7 @@ output = model(encoded_input)
   - [Arabic Wikipedia](https://archive.org/details/arwiki-20190201)
   - The unshuffled version of the Arabic [OSCAR corpus](https://oscar-corpus.com/)
 - DA
-  - A collection of dialectal Arabic data described in our paper.
+  - A collection of dialectal Arabic data described in [our paper](https://arxiv.org/abs/2103.06678).
 - CA
   - [OpenITI (Version 2020.1.2)](https://zenodo.org/record/3891466#.YEX4-F0zbzc)