Update README.md

Corrected status badge for main build

Author: Chessray

README.md

@@ -2,7 +2,7 @@
 Helpful additions to MapStruct when using the Spring Framework.
 
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
-[![Build Status](https://github.com/mapstruct/mapstruct-spring-extensions/workflows/Java%20CI%20with%20Gradle/badge.svg?branch=master)](https://github.com/mapstruct/mapstruct-spring-extensions/actions?query=branch%3Amaster+workflow%3AJava%20CI%20with%20Gradle)
+[![Java CI with Gradle](https://github.com/mapstruct/mapstruct-spring-extensions/actions/workflows/gradle.yml/badge.svg)](https://github.com/mapstruct/mapstruct-spring-extensions/actions/workflows/gradle.yml)
 [![Nightly checks with Gradle](https://github.com/mapstruct/mapstruct-spring-extensions/actions/workflows/nightly_checks.yml/badge.svg)](https://github.com/mapstruct/mapstruct-spring-extensions/actions/workflows/nightly_checks.yml)
 
 This project expects some familiarity with MapStruct Core as well as Spring. Please find the [reference documentation](https://mapstruct.org/documentation/spring-extensions/reference/html/) on the [main MapStruct website](https://mapstruct.org/).