Update README.md

Author: eliasgruenewald

README.md

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-![Java CI with Maven](https://github.com/Transparency-Information-Language/java-tilt/workflows/Java%20CI%20with%20Maven/badge.svg)
+![Java CI with Maven](https://github.com/Transparency-Information-Language/java-tilt/workflows/Java%20CI%20with%20Maven/badge.svg) ![Maven Package](https://github.com/Transparency-Information-Language/java-tilt/workflows/Maven%20Package/badge.svg)
 
 # java-tilt
 java-tilt is a Java based language binding for the Transparency Information Language and Toolkit.