Update quickstart-deploy-web-app.md

Add `references_regions` to `ms.custom` metadata for tracking purposes.

Author: AnnaMHuff

articles/spring-apps/quickstart-deploy-web-app.md

@@ -5,7 +5,7 @@ author: KarlErickson
 ms.service: spring-apps
 ms.topic: quickstart
 ms.date: 07/11/2023
-ms.custom: devx-track-java, devx-track-extended-java, devx-track-azurecli, mode-other, event-tier1-build-2022, engagement-fy23
+ms.custom: devx-track-java, devx-track-extended-java, devx-track-azurecli, mode-other, event-tier1-build-2022, engagement-fy23, references_regions
 ms.author: xiada
 zone_pivot_groups: spring-apps-plan-selection
 ---