Update README.md

Author: infonetlijian

README.md

@@ -2,7 +2,7 @@
 [![Pytest](https://github.com/QNLab-USTC/SimQN/actions/workflows/pytest.yml/badge.svg?branch=main)](https://github.com/QNLab-USTC/SimQN/actions/workflows/pytest.yml)
 ![Flake8](https://github.com/QNLab-USTC/SimQN/actions/workflows/flake8.yml/badge.svg)
 [![License](https://img.shields.io/badge/License-GPL_3.0-green?logo=github&logoColor=white)](LICENSE)
-[![GitHub Stars](https://img.shields.io/github/stars/QNLab-USTC/SimQN?logo=github&logoColor=white&label=Stars&labelColor=181717&color=2ea44f)](https://github.com/QNLab-USTC/SimQN/stargazers) 
+[![GitHub Stars](https://img.shields.io/pypi/dm/qns?style=flat&logo=github&label=Stars)](https://github.com/QNLab-USTC/SimQN/stargazers) 
 [![PyPI - Downloads](https://img.shields.io/pypi/dm/qns?style=flat&logo=pypi&label=PyPI)](https://pypi.org/project/qns/) 
 [![Citations](https://img.shields.io/badge/Citations-66-blue?style=flat&logo=googlescholar)](https://scholar.google.com/scholar?cites=17361842933401893020) 
 [![Academic Usages](https://img.shields.io/badge/Academic_Usages-21-purple?style=flat)](https://github.com/QNLab-USTC/SimQN?tab=readme-ov-file#academic-paper-using-simqn-for-simulation)