Merge pull request #114120 from rboucher/patch-10

Update to give advice if hitting alert limit.

Author: PRMerger14

includes/azure-monitor-limits-alerts.md

@@ -13,7 +13,7 @@ ms.custom: "include file"
 | Resource | Default limit | Maximum limit |
 | --- | --- | --- |
 | Metric alerts (classic) |100 active alert rules per subscription. | Call support. |
-| Metric alerts |2,000 active alert rules per subscription in Azure public, Azure China 21Vianet and Azure Government clouds. | Call support. |
+| Metric alerts |2,000 active alert rules per subscription in Azure public, Azure China 21Vianet and Azure Government clouds. If you are hitting this limit, explore if you can use [same type multi-resource alerts](https://docs.microsoft.com/azure/azure-monitor/platform/alerts-metric-overview#monitoring-at-scale-using-metric-alerts-in-azure-monitor)   | Call support. |
 | Activity log alerts | 100 active alert rules per subscription. | Same as default. |
 | Log alerts | 512 active alert rules per subscription. 200 active alert rules per resource. | Call support. |
 | Action groups |2,000 action groups per subscription. | Call support. |