Update MediaUploadDocumentation.md

Fixing document date based on the update date

Author: VesaJuvonen

docs/spfx/viva/get-started/actions/media-upload/MediaUploadDocumentation.md

@@ -1,7 +1,7 @@
 ---
 title: Media upload in Adaptive Card Extension
 description: Media upload is a new action that the SharePoint Adaptive Card Extension framework supports, which enables third party developers to upload data content to sharepoint.
-ms.date: 08/09/2022
+ms.date: 01/09/2023
 ---
 # Media upload in Adaptive Card Extension