doc(readme): add links for dataset (#951)

README.md

@@ -7,7 +7,7 @@
 <div align="center">
 
 [![Python 3.10](https://img.shields.io/badge/python-%E2%89%A53.10-blue)](https://www.python.org/downloads/release/python-3109/)
-[![GitHub pull request](https://img.shields.io/badge/PRs-welcome-orange)](https://github.com/hiyouga/LLaMA-Factory/pulls)
+[![Dataset](https://img.shields.io/badge/%F0%9F%A4%97-ResearchBench-yellow)](https://huggingface.co/datasets/ulab-ai/research-bench)
 [![Arxiv](https://img.shields.io/badge/arXiv-Coming%20soon-b31b1b)](https://github.com/ulab-uiuc/research-town)
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