Show badge from schedule in readme

README.md

@@ -24,7 +24,7 @@ Rolling | Harmonic | [master](https://github.com/ros-controls/gz_ros2_control/tr
 ROS 2 Distro | Branch | Build status | Documentation
 :----------: | :----: | :----------: | :-----------:
 **Rolling** | [`master`](https://github.com/ros-controls/gz_ros2_control/tree/master) | [![gazebo_ros2_control CI - Rolling](https://github.com/ros-controls/gz_ros2_control/actions/workflows/ci-rolling.yaml/badge.svg?branch=master)](https://github.com/ros-controls/gz_ros2_control/actions/workflows/ci-rolling.yaml) | [Documentation](https://control.ros.org/master/index.html) <br /> [API Reference](https://control.ros.org/master/doc/api/index.html)
-**Iron** | [`iron`](https://github.com/ros-controls/gz_ros2_control/tree/iron) | [![gazebo_ros2_control CI - Iron](https://github.com/ros-controls/gz_ros2_control/actions/workflows/ci-iron.yaml/badge.svg?branch=iron)](https://github.com/ros-controls/gz_ros2_control/actions/workflows/ci-iron.yaml) | [Documentation](https://control.ros.org/iron/index.html) <br /> [API Reference](https://control.ros.org/iron/doc/api/index.html)
+**Iron** | [`iron`](https://github.com/ros-controls/gz_ros2_control/tree/iron) | [![gazebo_ros2_control CI - Iron](https://github.com/ros-controls/gz_ros2_control/actions/workflows/ci-iron.yaml/badge.svg?branch=master)](https://github.com/ros-controls/gz_ros2_control/actions/workflows/ci-iron.yaml) | [Documentation](https://control.ros.org/iron/index.html) <br /> [API Reference](https://control.ros.org/iron/doc/api/index.html)
 **Humble** | [`humble`](https://github.com/ros-controls/gz_ros2_control/tree/humble) | [![ign_ros2_control CI - Humble](https://github.com/ros-controls/gz_ros2_control/actions/workflows/ci-humble.yaml/badge.svg?branch=humble)](https://github.com/ros-controls/gz_ros2_control/actions/workflows/ci-humble.yaml) | [Documentation](https://control.ros.org/humble/index.html) <br /> [API Reference](https://control.ros.org/humble/doc/api/index.html)
 ## Documentation
 See the [documentation file](doc/index.rst) or [control.ros.org](https://control.ros.org/master/doc/gz_ros2_control/doc/index.html)