Cleaned up a slew of Javadoc errors in preparation for switch over to Java 8.
diff --git a/core/api/src/main/java/org/onlab/onos/net/intent/Intent.java b/core/api/src/main/java/org/onlab/onos/net/intent/Intent.java
index 92161f4..206552e 100644
--- a/core/api/src/main/java/org/onlab/onos/net/intent/Intent.java
+++ b/core/api/src/main/java/org/onlab/onos/net/intent/Intent.java
@@ -26,8 +26,9 @@
 
 /**
  * Abstraction of an application level intent.
- * <p/>
+ * <p>
  * Make sure that an Intent should be immutable when a new type is defined.
+ * </p>
  */
 public abstract class Intent implements BatchOperationTarget {