add arxiv link

README.md

@@ -18,7 +18,7 @@ size_categories:
 
 Official dataset release of a 4D steerability probe (reading difficulty, formality, textual diversity, text length goal-space). Initial probe contains 2,048 prompts used in our work (32 different rewrites over 64 texts).
 
-[Demo](https://steerability.onrender.com/) | [Code](https://github.com/tchang1997/steerability) | [Website](https://steerability.org/) | [Paper]()
+[Demo](https://steerability.onrender.com/) | [Code](https://github.com/tchang1997/steerability) | [Website](https://steerability.org/) | [Paper](https://arxiv.org/abs/2505.23816)
 
 
 ## Dataset format