change date

Author: diberry

articles/cognitive-services/LUIS/sdk-csharp-quickstart-authoring-app.md

@@ -8,7 +8,7 @@ manager: nitinme
 ms.service: cognitive-services
 ms.subservice: language-understanding
 ms.topic: quickstart
-ms.date: 07/17/2019
+ms.date: 08/12/2019
 ms.author: diberry
 ---
 # Quickstart: Language Understanding (LUIS) authoring client library for .NET