fix name of branch in readme

Author: mikeferguson

README.md

@@ -10,7 +10,7 @@ Note: openni2_camera supports xtion devices, but not kinects. For using a kinect
 Branching:
 - ROS2:
    - The [ros2](https://github.com/ros-drivers/openni2_camera/tree/ros2) branch supports Rolling
-   - The [ros2](https://github.com/ros-drivers/openni2_camera/tree/jazzy) branch supports Jazzy and Kilted
+   - The [jazzy](https://github.com/ros-drivers/openni2_camera/tree/jazzy) branch supports Jazzy and Kilted
    - The [iron](https://github.com/ros-drivers/openni2_camera/tree/iron) branch supports Humble to Iron
    - openni2_launch has NOT been ported yet
 - ROS1: [ros1](https://github.com/ros-drivers/openni2_camera/tree/ros1) branch (no longer maintained)