DOCS-860 addOption shorten example to add only one option

Author: kay-kim

source/reference/method/cursor.addOption.txt

@@ -19,15 +19,13 @@ cursor.addOption()
    list, see your :doc:`driver documentation </applications/drivers>`.
 
    The following example in the :program:`mongo` shell adds the
-   ``DBQuery.Option.tailable`` and ``DBQuery.Option.awaitData`` flags
-   to ensure the cursor returned from the query is a tailable cursor
-   that waits for a few seconds when the cursor reaches the end of the
-   data:
+   ``DBQuery.Option.tailable`` flag to ensure the cursor returned from
+   the query is a tailable cursor:
 
    .. code-block:: javascript
 
-      var cursor = db.myCappedCollection.find().addOption(DBQuery.Option.tailable).
-                                                addOption(DBQuery.Option.awaitData);
+      var t = db.myCappedCollection;
+      var cursor = t.find().addOption(DBQuery.Option.tailable);
 
    .. warning:: Adding incorrect wire protocol flags can cause problems
       and/or extra server load.