Fix whitespace

Issue gh-1946

spring-session-samples/spring-session-sample-boot-mongodb-traditional/src/main/java/org/springframework/session/mongodb/examples/EmbeddedMongoPortLogger.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.session.mongodb.examples;
 
 import org.apache.commons.logging.Log;

spring-session-samples/spring-session-sample-boot-mongodb-traditional/src/main/java/org/springframework/session/mongodb/examples/SpringSessionMongoTraditionalBoot.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.session.mongodb.examples;
 
 import org.springframework.boot.SpringApplication;

spring-session-samples/spring-session-sample-boot-mongodb-traditional/src/main/java/org/springframework/session/mongodb/examples/config/HttpSessionConfig.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.session.mongodb.examples.config;
 
 import java.time.Duration;

spring-session-samples/spring-session-sample-boot-mongodb-traditional/src/main/java/org/springframework/session/mongodb/examples/config/SecurityConfig.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.session.mongodb.examples.config;
 
 import org.springframework.beans.factory.annotation.Autowired;

spring-session-samples/spring-session-sample-boot-mongodb-traditional/src/main/java/org/springframework/session/mongodb/examples/mvc/IndexController.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.session.mongodb.examples.mvc;
 
 import org.springframework.stereotype.Controller;