Update vpn-gateway-howto-aws-bgp.md

Author: cherylmc

articles/vpn-gateway/vpn-gateway-howto-aws-bgp.md

@@ -6,7 +6,7 @@ author: cherylmc
 ms.author: cherylmc
 ms.service: vpn-gateway
 ms.topic: tutorial
-ms.date: 06/28/2023
+ms.date: 08/01/2023
 
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