Merge pull request #44944 from dcbrown16/patch-77

Update security-center-alerts-overview.md

Author: ktoliver

articles/security-center/security-center-alerts-overview.md

@@ -15,7 +15,7 @@ ms.author: memildin
 
 In Azure Security Center, there are a variety of alerts for many different resource types. Security Center generates alerts for resources deployed on Azure, and also for resources deployed on on-premises and hybrid cloud environments.
 
-Advanced detections are available in the Standard Tier of Azure Security Center. A free trial is available. You can upgrade from the Pricing Tier selection in the [Security Policy](security-center-pricing.md). Visit [Security Center page](https://azure.microsoft.com/pricing/details/security-center/) to learn more about pricing.
+Security alerts are triggered by advanced detections and are available only in the Standard Tier of Azure Security Center. A free trial is available. You can upgrade from the Pricing Tier selection in the [Security Policy](security-center-pricing.md). Visit [Security Center page](https://azure.microsoft.com/pricing/details/security-center/) to learn more about pricing.
 
 ## Responding to today’s threats <a name="respond-threats"> </a>