Resolves checkstyle errors for api-gateway, lazy-loading, leader-election (#1066)

* Reduces checkstyle errors in lazy-loading

* Reduces checkstyle errors in leader-election

* Reduces checkstyle errors in api-gateway

lazy-loading/src/main/java/com/iluwatar/lazy/loading/HolderNaive.java

@@ -27,9 +27,7 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 /**
- * 
  * Simple implementation of the lazy loading idiom. However, this is not thread safe.
- *
  */
 public class HolderNaive {
 
@@ -38,14 +36,14 @@ public class HolderNaive {
   private Heavy heavy;
 
   /**
-   * Constructor
+   * Constructor.
    */
   public HolderNaive() {
     LOGGER.info("HolderNaive created");
   }
 
   /**
-   * Get heavy object
+   * Get heavy object.
    */
   public Heavy getHeavy() {
     if (heavy == null) {