Update elastic-san-metrics.md

Author: denisacatalinastan

articles/storage/elastic-san/elastic-san-metrics.md

@@ -52,7 +52,7 @@ The **Availability** metric can be useful to view any visible issues from either
 When using this metric with Azure Elastic SAN, we recommend using the **Average** aggregation - using Average shows you what percentage of your requests are experiencing errors, and if they are within [Elastic SAN's SLA](https://www.microsoft.com/licensing/docs/view/Service-Level-Agreements-SLA-for-Online-Services?lang=1).
 You can use the **Min** and **Max** aggregation for worst and best case availability scenarios. For instance - **Min** availability can be used for incident alerting.
 
-### How to create an alert for Availability <99.9%
+### How to create an alert for Availability < 99.9%
 
 1. Open the **Create an alert rule** dialog box. For more information, see [Create or edit an alert rule](/azure/azure-monitor/alerts/alerts-create-new-alert-rule).