Fixed javadocs and descriptions.

Change-Id: I92147b858d8012c957cc03fab2d306740161e2f3
diff --git a/providers/null/pom.xml b/providers/null/pom.xml
index f846fbc..dc2f333 100644
--- a/providers/null/pom.xml
+++ b/providers/null/pom.xml
@@ -29,7 +29,7 @@
     <artifactId>onos-null-provider</artifactId>
     <packaging>bundle</packaging>
 
-    <description>Null southbound providers application</description>
+    <description>Null southbound providers</description>
 
     <properties>
         <onos.app.name>org.onosproject.null</onos.app.name>