ms.date update: json-transcoding-openapi.md (#34773)

This document was just updated today by JamesNK but I forgot to update the ms.date, so doing it now.  Very minor change.

Author: wadepickett

aspnetcore/grpc/json-transcoding-openapi.md

@@ -4,7 +4,7 @@ author: jamesnk
 description: Learn how to configure gRPC JSON transcoding to generate OpenAPI.
 monikerRange: '>= aspnetcore-7.0'
 ms.author: wpickett
-ms.date: 09/20/2022
+ms.date: 02/19/2025
 uid: grpc/json-transcoding-openapi
 ---
 # gRPC JSON transcoding documentation with Swagger / OpenAPI