Update README.md

Author: githubuser0xFFFF

README.md

@@ -70,7 +70,7 @@ The application can be compiled for macOS. A user reported, that the library wor
 
 ### Linux
 Ubuntu [![Build Status](https://travis-ci.org/githubuser0xFFFF/Qt-Advanced-Docking-System.svg?branch=master)](https://travis-ci.org/githubuser0xFFFF/Qt-Advanced-Docking-System)
-![Build status](https://github.com/githubuser0xFFFF/Qt-Advanced-Docking-System/workflows/linux-builds/badge.svg)
+[![Build status](https://github.com/githubuser0xFFFF/Qt-Advanced-Docking-System/workflows/linux-builds/badge.svg)](https://github.com/githubuser0xFFFF/Qt-Advanced-Docking-System/actions?query=workflow%3Alinux-builds)
 
 The application can be compiled for Linux and has been developed and tested with **Kubuntu 18.04**.