fix minor code formatting issues

Author: hmottestad

spring-components/rdf4j-spring/src/test/java/org/eclipse/rdf4j/spring/support/RDF4JTemplateTests.java

@@ -1,5 +1,4 @@
-/**
- * *****************************************************************************
+/*******************************************************************************
  * Copyright (c) 2021 Eclipse RDF4J contributors.
  *
  * All rights reserved. This program and the accompanying materials
@@ -8,11 +7,13 @@
  * http://www.eclipse.org/org/documents/edl-v10.php.
  *
  * SPDX-License-Identifier: BSD-3-Clause
- *******************************************************************************/
+ ******************************************************************************/
 
 package org.eclipse.rdf4j.spring.support;
 
-import static org.junit.jupiter.api.Assertions.*;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertThrows;
 
 import java.util.List;
 import java.util.Set;