Fic CI badge

README.md

@@ -1,6 +1,6 @@
 <img src="https://raw.githubusercontent.com/eclipse-zenoh/zenoh/master/zenoh-dragon.png" height="150">
 
-[![CI](https://github.com/eclipse-zenoh/zenoh/workflows/CI/badge.svg)](https://github.com/eclipse-zenoh/zenoh/actions?query=workflow%3A%22CI%22)
+[![CI](https://github.com/eclipse-zenoh/zenoh/workflows/CI/badge.svg?branch=main)](https://github.com/eclipse-zenoh/zenoh/actions?query=workflow%3ACI+branch%3Amain++)
 [![Documentation Status](https://readthedocs.org/projects/zenoh-rust/badge/?version=latest)](https://zenoh-rust.readthedocs.io/en/latest/?badge=latest)
 [![Discussion](https://img.shields.io/badge/discussion-on%20github-blue)](https://github.com/eclipse-zenoh/roadmap/discussions)
 [![Discord](https://img.shields.io/badge/chat-on%20discord-blue)](https://discord.gg/2GJ958VuHs)