ONOS-3200 unify code formation and fix grammar problem

Change-Id: I968c8b96209e00ef9ef8f9d6bb355e476d048019
diff --git a/ovsdb/api/src/main/java/org/onosproject/ovsdb/controller/OvsdbPortNumber.java b/ovsdb/api/src/main/java/org/onosproject/ovsdb/controller/OvsdbPortNumber.java
index 9c57b5d..bd094d0 100644
--- a/ovsdb/api/src/main/java/org/onosproject/ovsdb/controller/OvsdbPortNumber.java
+++ b/ovsdb/api/src/main/java/org/onosproject/ovsdb/controller/OvsdbPortNumber.java
@@ -20,14 +20,15 @@
 import java.util.Objects;
 
 /**
- * The class representing a port number. This class is immutable.
+ * The class representing a port number.
+ * This class is immutable.
  */
 public final class OvsdbPortNumber {
 
     private final long value;
 
     /**
-     * Constructor from a long port number.
+     * Constructor from a long value.
      *
      * @param value the port number to use
      */
@@ -36,9 +37,9 @@
     }
 
     /**
-     * Gets the value of the port number.
+     * Gets the value of port number.
      *
-     * @return the value of the port number
+     * @return the value of port number
      */
     public long value() {
         return value;