Update README.md

Co-authored-by: Hannes Winkler <[email protected]>

Author: DoumanAsh

README.md

@@ -41,6 +41,7 @@ If you encounter issues running flutter-pi on any of the supported platforms lis
 2.2 [Building the App](#building-the-app-new-method-linux-only)
 2.3 [Running your App with flutter-pi](#running-your-app-with-flutter-pi)
 2.4 [gstreamer video player](#gstreamer-video-player)
+2.5 [audioplayers](#audioplayers)
 3. **[Performance](#-performance)**
 3.1 [Graphics Performance](#graphics-performance)
 3.2 [Touchscreen latency](#touchscreen-latency)