Update README.md

Author: AlexTISYoung

README.md

@@ -10,7 +10,7 @@
 [![Documentation](https://img.shields.io/badge/docs-8A2BE2.svg?style=flat-square)](https://snipar.readthedocs.io/en/latest/index.html)
 [![Guide](https://img.shields.io/badge/guide-red.svg?style=flat-square)](https://snipar.readthedocs.io/en/latest/guide.html)
 [![Tutorial](https://img.shields.io/badge/tutorial-20B2AA.svg?style=flat-square)](https://snipar.readthedocs.io/en/latest/tutorial.html)
-[![Exercise](https://img.shields.io/badge/sim-exercise-20B2AA.svg?style=flat-square)](https://snipar.readthedocs.io/en/latest/simulation.html))
+[![Exercise](https://img.shields.io/badge/sim-exercise-20B2AA.svg?style=flat-square)](https://snipar.readthedocs.io/en/latest/simulation.html)
 [![Publication](https://img.shields.io/badge/Published-Nature%20Genetics-26af64.svg?colorB=26af64&style=popout)](https://www.nature.com/articles/s41588-025-02118-0)
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