Fix navigation path in onboarding.md

The UI has changed slightly since the article was originally written, the "Settings" tab is now under "System."

Author: jeffreymcclain

defender-endpoint/onboarding.md

@@ -43,7 +43,7 @@ If you're onboarding devices in the Microsoft Defender portal, follow these step
 
 1. Make sure to review the [Minimum requirements for Defender for Endpoint](minimum-requirements.md).
 
-2. In the [Microsoft Defender portal](https://security.microsoft.com), go to **Settings** > **Endpoints**, and then, under **Device management**, select **Onboarding**.
+2. In the [Microsoft Defender portal](https://security.microsoft.com), go to **System** > **Settings** > **Endpoints**, and then, under **Device management**, select **Onboarding**.
 
    :::image type="content" source="media/mde-device-onboarding-ui.png" alt-text="Screenshot showing device onboarding in the Microsoft Defender portal for Defender for Endpoint.":::