Add paper link to connect the model to its paper (#1)

- Add paper link to connect the model to its paper (931d6b095317f3601069e36908afd360147c7898)


Co-authored-by: Adina Yakefu <AdinaY@users.noreply.huggingface.co>

README.md

@@ -27,3 +27,6 @@ Where to send questions or comments about the model: https://github.com/alibaba/
 - 158K GPT-generated multimodal instruction-following data.
 - 500K academic-task-oriented VQA data mixture.
 - 40K ShareGPT data.
+
+## Paper 
+arxiv.org/abs/2405.15738