minor: formating

Author: Sam Kleinman

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

@@ -67,16 +67,16 @@ db.collection.update()
           - the :method:`update() <db.collection.update()>` method updates cannot
             update multiple documents.
 
-   :param document options: Optional.
+   :param document options: 
 
-          A :term:`document` that specifies whether to
+          Optional. A :term:`document` that specifies whether to
           perform an :term:`upsert` and/or a multiple update. You can
           use the ``options`` parameter instead of the individual
           ``upsert`` and ``multi`` parameters.
 
-   :param boolean upsert: Optional.
+   :param boolean upsert: 
 
-          A boolean that specifies whether to perform
+          Optional. A boolean that specifies whether to perform
           an :term:`upsert`.
 
           The default value is ``false``. When
@@ -94,9 +94,9 @@ db.collection.update()
              An upsert operation affects only *one* document, and
              cannot update multiple documents.
 
-   :param boolean multi: Optional.
+   :param boolean multi:
 
-          A boolean that specifies whether to update multiple
+          Optional. A boolean that specifies whether to update multiple
           documents that meet the query criteria.
 
           When not specified, the default value is ``false`` and the