s/id/ID/ in messages

Change-Id: I33eb975f9efe1eea8c29b60c625e67b166b49f49
diff --git a/util.py b/util.py
index 7652037..f4824d0 100644
--- a/util.py
+++ b/util.py
@@ -309,7 +309,7 @@
         vlan_id = int(data['vlan_id'])
 
         # 1. Check for database records first
-        print 'Checking for ports using VLAN id %d' % vlan_id
+        print 'Checking for ports using VLAN ID %d' % vlan_id
         vlan = db.get_vlan_by_id(vlan_id)
         if vlan is None:
             raise InputError("VLAN ID %d does not exist" % vlan_id)
@@ -391,9 +391,9 @@
 
         # 4. Finally, remove the VLAN in the DB
         try:
-            print 'Removing DB record: VLAN id %d' % vlan_id
+            print 'Removing DB record: VLAN ID %d' % vlan_id
             vlan_id = db.delete_vlan(vlan_id)
-            print 'Removed VLAN id %d from the database OK' % vlan_id
+            print 'Removed VLAN ID %d from the database OK' % vlan_id
         except InputError:
             print 'DB deletion failed'
             raise