Fix python versions for display in README.md (#128)

Author: markurtz

README.md

@@ -9,7 +9,7 @@
 Scale Efficiently: Evaluate and Optimize Your LLM Deployments for Real-World Inference
 </h3>
 
-[![GitHub Release](https://img.shields.io/github/release/neuralmagic/guidellm.svg?label=Version)](https://github.com/neuralmagic/guidellm/releases) [![Documentation](https://img.shields.io/badge/Documentation-8A2BE2?logo=read-the-docs&logoColor=%23ffffff&color=%231BC070)](https://github.com/neuralmagic/guidellm/tree/main/docs) [![License](https://img.shields.io/github/license/neuralmagic/guidellm.svg)](https://github.com/neuralmagic/guidellm/blob/main/LICENSE) [![PyPI Release](https://img.shields.io/pypi/v/guidellm.svg?label=PyPI%20Release)](https://pypi.python.org/pypi/guidellm) [![Python Versions](https://img.shields.io/badge/Python-3.8--3.12-orange)](https://pypi.python.org/pypi/guidellm) [![Nightly Build](https://img.shields.io/github/actions/workflow/status/neuralmagic/guidellm/nightly.yml?branch=main&label=Nightly%20Build)](https://github.com/neuralmagic/guidellm/actions/workflows/nightly.yml)
+[![GitHub Release](https://img.shields.io/github/release/neuralmagic/guidellm.svg?label=Version)](https://github.com/neuralmagic/guidellm/releases) [![Documentation](https://img.shields.io/badge/Documentation-8A2BE2?logo=read-the-docs&logoColor=%23ffffff&color=%231BC070)](https://github.com/neuralmagic/guidellm/tree/main/docs) [![License](https://img.shields.io/github/license/neuralmagic/guidellm.svg)](https://github.com/neuralmagic/guidellm/blob/main/LICENSE) [![PyPI Release](https://img.shields.io/pypi/v/guidellm.svg?label=PyPI%20Release)](https://pypi.python.org/pypi/guidellm) [![Python Versions](https://img.shields.io/badge/Python-3.9--3.13-orange)](https://pypi.python.org/pypi/guidellm) [![Nightly Build](https://img.shields.io/github/actions/workflow/status/neuralmagic/guidellm/nightly.yml?branch=main&label=Nightly%20Build)](https://github.com/neuralmagic/guidellm/actions/workflows/nightly.yml)
 
 ## Overview