changing graphic, adding lightbox

Author: AarDavMax

articles/azure-monitor/app/app-insights-overview.md

@@ -16,7 +16,7 @@ In addition to collecting [Metrics](standard-metrics.md) and application [Teleme
 
 The [log trace](asp-net-trace-logs.md) is associated with other telemetry to give a detailed view of the activity. Adding trace logging to existing apps only requires providing a destination for the logs; the logging framework rarely needs to be changed.
 
-:::image type="content" source="media/app-insights-overview/app-insights.png" alt-text="Screenshot of Application Insights in the Azure portal.":::
+:::image type="content" source="media/overview-dashboard/0001-dashboard.png" alt-text="Screenshot of Application Insights in the Azure portal." lightbox="media/overview-dashboard/0001-dashboard.png":::
 
 Application Insights provides other features including, but not limited to: