Cleaned up a slew of Javadoc errors in preparation for switch over to Java 8.
diff --git a/core/net/src/main/java/org/onlab/onos/net/host/impl/HostMonitor.java b/core/net/src/main/java/org/onlab/onos/net/host/impl/HostMonitor.java
index 4b12931..f28dcdb 100644
--- a/core/net/src/main/java/org/onlab/onos/net/host/impl/HostMonitor.java
+++ b/core/net/src/main/java/org/onlab/onos/net/host/impl/HostMonitor.java
@@ -51,10 +51,11 @@
 
 /**
  * Monitors hosts on the dataplane to detect changes in host data.
- * <p/>
+ * <p>
  * The HostMonitor can monitor hosts that have already been detected for
  * changes. At an application's request, it can also monitor and actively
  * probe for hosts that have not yet been detected (specified by IP address).
+ * </p>
  */
 public class HostMonitor implements TimerTask {
     private DeviceService deviceService;