DOCS-505 update api change

Author: kay-kim

source/reference/method/db.collection.update.txt

@@ -8,7 +8,7 @@ db.collection.update()
 
    .. versionchanged:: 2.2 
       The :program:`mongo` shell adds an updated interface that
-      accepts an parameters in more clear :term:`document` form to
+      accepts parameters in a more clear :term:`document` form to
       specify ``multi`` and ``upsert`` options.
 
    The :method:`update() <db.collection.update()>` method provides the ability to
@@ -191,4 +191,4 @@ db.collection.update()
 
      .. code-block:: javascript
 
-        db.products.update( { item: "magazine", qty: { $gt: 5 } }, { $set: { x: 25, y: 50 } }, { upsert: true } )
+        db.products.update( { item: "magazine", qty: { $gt: 5 } }, { $set: { x: 25, y: 50 } }, true )