PYTHON-2748 Fix error in UUID example (#650)

Author: prashantmital

doc/examples/uuid.rst

@@ -255,19 +255,27 @@ Applications can set the UUID representation in one of the following ways:
       * - ``unspecified``
         - :ref:`unspecified-representation-details`
 
-#. Using the ``uuid_representation`` kwarg option, e.g.::
+#. At the ``MongoClient`` level using the ``uuidRepresentation`` kwarg
+   option, e.g.::
 
      from bson.binary import UuidRepresentation
-     client = MongoClient(uuid_representation=UuidRepresentation.PYTHON_LEGACY)
+     client = MongoClient(uuidRepresentation=UuidRepresentation.PYTHON_LEGACY)
 
-#. By supplying a suitable :class:`~bson.codec_options.CodecOptions`
-   instance, e.g.::
+#. At the ``Database`` or ``Collection`` level by supplying a suitable
+   :class:`~bson.codec_options.CodecOptions` instance, e.g.::
 
      from bson.codec_options import CodecOptions
      csharp_opts = CodecOptions(uuid_representation=UuidRepresentation.CSHARP_LEGACY)
+     java_opts = CodecOptions(uuid_representation=UuidRepresentation.JAVA_LEGACY)
+
+     # Get database/collection from client with csharpLegacy UUID representation
      csharp_database = client.get_database('csharp_db', codec_options=csharp_opts)
      csharp_collection = client.testdb.get_collection('csharp_coll', codec_options=csharp_opts)
 
+     # Get database/collection from existing database/collection with javaLegacy UUID representation
+     java_database = csharp_database.with_options(codec_options=java_opts)
+     java_collection = csharp_collection.with_options(codec_options=java_opts)
+
 Supported UUID Representations
 ------------------------------