Change CI badge to jazzy

Updated CI badge from iron to jazzy in README.

Author: Ar-Ray-code

README.md

@@ -2,8 +2,7 @@
 
 ![](https://img.shields.io/github/stars/Ar-Ray-code/YOLOX-ROS)
 
-[![iron](https://github.com/Ar-Ray-code/YOLOX-ROS/actions/workflows/ci_iron.yml/badge.svg?branch=iron)](https://github.com/Ar-Ray-code/YOLOX-ROS/actions/workflows/ci_iron.yml)
-
+[![ci_jazzy](https://github.com/Ar-Ray-code/YOLOX-ROS/actions/workflows/ci_jazzy.yml/badge.svg)](https://github.com/Ar-Ray-code/YOLOX-ROS/actions/workflows/ci_jazzy.yml)
 
 [YOLOX](https://github.com/Megvii-BaseDetection/YOLOX) + ROS2 Iron demo