Fix duplicate entry for behaviorOnError property

Author: Danielabom

api-reference/beta/api/identitycontainer-post-customauthenticationextensions.md

@@ -66,11 +66,11 @@ You can specify the following properties when creating a **customAuthenticationE
 |Property|Type|Description|
 |:---|:---|:---|
 |authenticationConfiguration|[customExtensionAuthenticationConfiguration](../resources/customextensionauthenticationconfiguration.md)|The authentication configuration for this custom extension. Required.|
+|behaviorOnError|[customExtensionBehaviorOnError](../resources/customextensionbehavioronerror.md)|Let to configure behavior if the call to custom authentication extension returns error. Optional.|
 |clientConfiguration|[customExtensionClientConfiguration](../resources/customextensionclientconfiguration.md)|The connection settings for the custom extension. Optional.|
 |description|String|Description for the custom extension. Inherited from [customCalloutExtension](../resources/customcalloutextension.md). Optional.|
 |displayName|String|Display name for the custom extension. Inherited from [customCalloutExtension](../resources/customcalloutextension.md). Optional.|
 |endpointConfiguration|[customExtensionEndpointConfiguration](../resources/customextensionendpointconfiguration.md)|Configuration for the API endpoint that the custom extension will call. Inherited from [customCalloutExtension](../resources/customcalloutextension.md). Optional.|
-|behaviorOnError|[customExtensionBehaviorOnError](../resources/customextensionbehavioronerror.md)|Let to configure behavior if the call to custom authentication extension returns error. Optional.|