Apply spotless re-formatting

Detected in the course of support-and-care/maven-support-and-care#77.

Author: ascheman

README.md

@@ -1,5 +1,5 @@
 Plexus-Classworlds
-===============
+==================
 
 [![Apache License, Version 2.0, January 2004](https://img.shields.io/github/license/codehaus-plexus/plexus-classworlds.svg?label=License)](http://www.apache.org/licenses/)
 [![Maven Central](https://img.shields.io/maven-central/v/org.codehaus.plexus/plexus-classworlds.svg?label=Maven%20Central)](https://search.maven.org/artifact/org.codehaus.plexus/plexus-classworlds)