fix date

Author: PatrickFarley

articles/cognitive-services/Computer-vision/overview.md

@@ -9,7 +9,7 @@ manager: nitinme
 ms.service: cognitive-services 
 ms.subservice: computer-vision 
 ms.topic: overview
-ms.date: 07.04/2023
+ms.date: 07/04/2023
 ms.author: pafarley
 ms.custom: [seodec18, cog-serv-seo-aug-2020, contperf-fy21q2]
 keywords: computer vision, computer vision applications, computer vision service