Javadoc and format nit

src/test/java/org/apache/commons/lang3/builder/ToStringBuilderTest.java

@@ -40,7 +40,7 @@ public class ToStringBuilderTest {
     private final Integer base = Integer.valueOf(5);
     private final String baseStr = base.getClass().getName() + "@" + Integer.toHexString(System.identityHashCode(base));
 
-    /*
+    /**
      * All tests should leave the registry empty.
      */
     @AfterEach
@@ -48,7 +48,6 @@ public void after() {
         validateNullToStringStyleRegistry();
     }
 
-
     @Test
     public void testConstructorEx1() {
         assertEquals("<null>", new ToStringBuilder(null).toString());