Update README.md

Author: Chandankkrr

README.md

@@ -98,7 +98,7 @@ var options = new ContentfulOptions
     DeliveryApiKey = "<content_delivery_api_key>",
     PreviewApiKey = "<content_preview_api_key>",
     SpaceId = "<space_id>"
-}
+};
 var client = new ContentfulClient(httpClient, options);
 ```