Update alerts-metric-create-templates.md

Fixed the allowed evaluation frequencies list in the "Static threshold alert on all virtual machines in a subscription" example

Author: harelbr

articles/azure-monitor/platform/alerts-metric-create-templates.md

@@ -1005,7 +1005,7 @@ az group deployment create \
 
 ## Template for metric alert that monitors multiple resources
 
-The previous sections described sample Azure Resource Manager templates to create metric alerts that monitor a single resource. Azure Monitor now supports monitoring multiple resources with a single metric alert rule. This feature is currently only supported in Azure public cloud and only for virtual Machines and Databox Edge Devices.
+The previous sections described sample Azure Resource Manager templates to create metric alerts that monitor a single resource. Azure Monitor now supports monitoring multiple resources with a single metric alert rule. This feature is currently only supported in Azure public cloud and only for virtual Machines, SQL Databases, SQL Elastic Pools and Databox Edge Devices.
 
 Dynamic Thresholds alerts rule can also help create tailored thresholds for hundreds of metric series (even different types) at a time, which results in fewer alert rules to manage.
 
@@ -1840,6 +1840,7 @@ Save the json below as all-vms-in-subscription-static.json for the purpose of th
             "type": "string",
             "defaultValue": "PT1M",
             "allowedValues": [
+                "PT1M",
                 "PT5M",
                 "PT15M",
                 "PT30M",