Merge pull request #86 from ros-sports/mergify/bp/humble/pr-84

Update README.md (backport #84)

README.md

@@ -3,7 +3,7 @@
 ROS2 Package to interface RoboCup Standard Platform League's Game Controller.
 
 [![Build and Test (humble)](../../actions/workflows/build_and_test_humble.yaml/badge.svg?branch=humble)](../../actions/workflows/build_and_test_humble.yaml?query=branch:humble)
-[![Build and Test (iron)](../../actions/workflows/build_and_test_iron.yaml/badge.svg?branch=rolling)](../../actions/workflows/build_and_test_iron.yaml?query=branch:rolling)
+[![Build and Test (iron)](../../actions/workflows/build_and_test_iron.yaml/badge.svg?branch=iron)](../../actions/workflows/build_and_test_iron.yaml?query=branch:iron)
 [![Build and Test (rolling)](../../actions/workflows/build_and_test_rolling.yaml/badge.svg?branch=rolling)](../../actions/workflows/build_and_test_rolling.yaml?query=branch:rolling)
 
 For more information, see our [Documentation](https://gamecontroller-spl.readthedocs.io/)