Update articles/api-management/how-to-self-hosted-gateway-on-kubernetes-in-production.md

Author: tomkerkhove

articles/api-management/how-to-self-hosted-gateway-on-kubernetes-in-production.md

@@ -16,7 +16,7 @@ In order to run the self-hosted gateway in production, there are various aspects
 
 This article provides guidance on how to run [self-hosted gateway](./self-hosted-gateway-overview.md) on Kubernetes for production workloads to ensure that it will run smoothly and reliably.
 
-[!INCLUDE [preview](./includes/preview/preview-callout-self-hosted-gateway-deprecation.md.md)]
+[!INCLUDE [preview](./includes/preview/preview-callout-self-hosted-gateway-deprecation.md)]
 
 ## Access token
 Without a valid access token, a self-hosted gateway can't access and download configuration data from the endpoint of the associated API Management service. The access token can be valid for a maximum of 30 days. It must be regenerated, and the cluster configured with a fresh token, either manually or via automation before it expires.