Improve model card: Add pipeline tag and update paper link (#2)

- Improve model card: Add pipeline tag and update paper link (098d4ad49ed148b681f1503e1ec87afff9dd7e22)


Co-authored-by: Niels Rogge <[email protected]>

README.md

@@ -1,7 +1,9 @@
 ---
-license: apache-2.0
 library_name: transformers
+license: apache-2.0
+pipeline_tag: image-text-to-text
 ---
+
 <div align="center">
   <picture>
       <img src="https://github.com/stepfun-ai/Step3/blob/main/figures/stepfun-logo.png?raw=true" width="30%" alt="StepFun: Cost-Effective Multimodal Intelligence">
@@ -27,7 +29,7 @@ library_name: transformers
 </div>
 
 <div align="center">
-<b>📰&nbsp;&nbsp;<a href="https://stepfun.ai/research/step3">Step3 Model Blog</a></b> &nbsp;&nbsp;&nbsp; | &nbsp;&nbsp;&nbsp; <b>📄&nbsp;&nbsp;<a href="https://arxiv.org/abs/2507.19427">Step3 System Blog</a></b>
+<b>📰&nbsp;&nbsp;<a href="https://stepfun.ai/research/step3">Step3 Model Blog</a></b> &nbsp;&nbsp;&nbsp; | &nbsp;&nbsp;&nbsp; <b>📄&nbsp;&nbsp;<a href="https://huggingface.co/papers/2507.19427">Paper</a></b>
 </div>
 
 ## Introduction