fix typo

Author: dem108

articles/machine-learning/how-to-secure-online-endpoint.md

@@ -70,7 +70,7 @@ The following diagram shows how communications flow through private endpoints to
 
     Outbound communication from a managed online endpoint deployment is to the _workspace API_. When the endpoint is configured to use __public outbound__, then the workspace must be able to accept that public communication (allow public access).
     
-* When you use network isolaiton with a deployment, you can use Azure Container Registry (ACR), Storage account, Key Vault and Application Insights from a different resource group in the same subscription, but you cannot use them if they are in a different subscription. 
+* When you use network isolation with a deployment, you can use Azure Container Registry (ACR), Storage account, Key Vault and Application Insights from a different resource group in the same subscription, but you cannot use them if they are in a different subscription. 
 
 > [!NOTE]
 > Requests to create, update, or retrieve the authentication keys are sent to the Azure Resource Manager over the public network.