Fix whitespace

Issue gh-1946

spring-session-samples/spring-session-sample-javaconfig-jdbc/src/main/java/sample/H2ConsoleInitializer.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package sample;
 
 import javax.servlet.ServletContext;

spring-session-samples/spring-session-sample-javaconfig-jdbc/src/main/java/sample/Initializer.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package sample;
 
 import org.springframework.session.web.context.AbstractHttpSessionApplicationInitializer;

spring-session-samples/spring-session-sample-javaconfig-jdbc/src/main/java/sample/SessionServlet.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package sample;
 
 import java.io.IOException;