Fixing javadocs.

Change-Id: I49faf425e0f9aa53547caf42f1d4025fb8d9dba6
diff --git a/core/api/src/main/java/org/onosproject/ui/UiExtension.java b/core/api/src/main/java/org/onosproject/ui/UiExtension.java
index 4e2f570..0debaa2 100644
--- a/core/api/src/main/java/org/onosproject/ui/UiExtension.java
+++ b/core/api/src/main/java/org/onosproject/ui/UiExtension.java
@@ -35,6 +35,7 @@
      * Creates a user interface extension for loading CSS and JS injections
      * from {@code css.html} and {@code js.html} resources, respectively.
      *
+     * @param views       list of contributed views
      * @param classLoader class-loader for user interface resources
      */
     public UiExtension(List<UiView> views, ClassLoader classLoader) {