Improve Javadoc

guarded-suspension/src/main/java/com/iluwatar/guarded/suspension/GuardedQueue.java

@@ -32,7 +32,7 @@ import java.util.Queue;
  * Guarded Queue is an implementation for Guarded Suspension Pattern
  * Guarded suspension pattern is used to handle a situation when you want to execute a method
  * on an object which is not in a proper state.
- * @see http://java-design-patterns.com/patterns/guarded-suspension/
+ * @see <a href="http://java-design-patterns.com/patterns/guarded-suspension/">http://java-design-patterns.com/patterns/guarded-suspension/</a>
  */
 public class GuardedQueue {
   private static final Logger LOGGER = LoggerFactory.getLogger(GuardedQueue.class);