Update README.md

update arxiv link

README.md

@@ -7,7 +7,7 @@
 ## Updates
 
 - [2026/03/05] Release paper and update mertics
-  - The paper has been released on [arXiv](https://arxiv.org/abs/2512.03069).
+  - The paper has been released on [arXiv](https://arxiv.org/pdf/2603.04205).
   - Update DeepSeek-OCR 2, GLM-OCR model evaluation.
 
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