[hibernate#2855] Update spotless.license.java

Hibernate Reactive is using a license header for the
java file that's a little different from the other projects

Author: DavideD

spotless.license.java

@@ -1,5 +1,4 @@
-/* Hibernate, Relational Persistence for Idiomatic Java
- *
+/*
  * SPDX-License-Identifier: Apache-2.0
- * Copyright: Red Hat Inc. and Hibernate Authors
+ * Copyright Red Hat Inc. and Hibernate Authors
  */