Polishing.

Minor formatting changes.

Original pull request #2874
See #2719

src/main/java/org/springframework/data/auditing/DefaultAuditableBeanWrapperFactory.java

@@ -230,6 +230,7 @@ class DefaultAuditableBeanWrapperFactory implements AuditableBeanWrapperFactory
 	}
 
 	private static IllegalArgumentException rejectUnsupportedType(Class<?> sourceType, Class<?> targetType) {
+
 		return new IllegalArgumentException(
 				String.format("Cannot convert unsupported date type %s to %s; Supported types are %s", sourceType.getName(),
 						targetType.getName(), AnnotationAuditingMetadata.SUPPORTED_DATE_TYPES));