Fixing branch in codacy badge

Author: sebastian-peter

README.md

@@ -1,7 +1,7 @@
 # PowerSystemUtils
 
 [![Build Status](https://simona.ie3.e-technik.tu-dortmund.de/ci/buildStatus/icon?job=ie3-institute%2FPowerSystemUtils%2Fmain)](https://simona.ie3.e-technik.tu-dortmund.de/ci/job/ie3-institute/job/PowerSystemUtils/job/main/)
-[![Quality Gate Status](https://simona.ie3.e-technik.tu-dortmund.de/sonar/api/project_badges/measure?project=edu.ie3%3Autils&metric=alert_status)](https://simona.ie3.e-technik.tu-dortmund.de/sonar/dashboard?id=edu.ie3%3Autils)
+[![Quality Gate Status](https://simona.ie3.e-technik.tu-dortmund.de/sonar/api/project_badges/measure?branch=main&project=edu.ie3%3Autils&metric=alert_status)](https://simona.ie3.e-technik.tu-dortmund.de/sonar/dashboard?id=edu.ie3%3Autils&branch=main)
 [![Codacy Badge](https://api.codacy.com/project/badge/Grade/0c6df0a8a7ec4ae08ed07f4d925100aa)](https://app.codacy.com/gh/ie3-institute/PowerSystemUtils?utm_source=github.com&utm_medium=referral&utm_content=ie3-institute/PowerSystemUtils&utm_campaign=Badge_Grade_Dashboard)
 [![codecov](https://codecov.io/gh/ie3-institute/PowerSystemUtils/branch/main/graph/badge.svg)](https://codecov.io/gh/ie3-institute/PowerSystemUtils)
 [![License](https://img.shields.io/github/license/ie3-institute/PowerSystemUtils)](https://github.com/ie3-institute/PowerSystemUtils/blob/main/LICENSE)