Add missing async gateway image to create.md

Author: deliahu

docs/clusters/management/create.md

@@ -103,6 +103,7 @@ image_operator: quay.io/cortexlabs/operator:master
 image_manager: quay.io/cortexlabs/manager:master
 image_downloader: quay.io/cortexlabs/downloader:master
 image_request_monitor: quay.io/cortexlabs/request-monitor:master
+image_image_async_gateway: quay.io/cortexlabs/async-gateway:master
 image_cluster_autoscaler: quay.io/cortexlabs/cluster-autoscaler:master
 image_metrics_server: quay.io/cortexlabs/metrics-server:master
 image_inferentia: quay.io/cortexlabs/inferentia:master

pkg/types/clusterconfig/cluster_config.go

@@ -1210,6 +1210,9 @@ func (cc *CoreConfig) TelemetryEvent() map[string]interface{} {
 	if !strings.HasPrefix(cc.ImageRequestMonitor, "cortexlabs/") {
 		event["image_request_monitor._is_custom"] = true
 	}
+	if !strings.HasPrefix(cc.ImageAsyncGateway, "cortexlabs/") {
+		event["image_async_gateway._is_custom"] = true
+	}
 	if !strings.HasPrefix(cc.ImageClusterAutoscaler, "cortexlabs/") {
 		event["image_cluster_autoscaler._is_custom"] = true
 	}