Update windows-autopilot-hybrid.md

The section that starts with "Before they're enrolled in Intune..." is under "Register devices from an OEM" subheading but is not specific to OEM registered devices, i.e. it should be under it's own subheading.

Author: davidpaMSFT

memdocs/autopilot/windows-autopilot-hybrid.md

@@ -181,6 +181,8 @@ If your devices aren't yet enrolled, you can register them yourself. For more in
 
 If you're buying new devices, some OEMs can register the devices for you. For more information, see [OEM registration](oem-registration.md).
 
+### View registered Autopilot device
+
 Before they're enrolled in Intune, *registered* Autopilot devices are displayed in three places (with names set to their serial numbers):
 - The **Autopilot Devices** pane in the Intune in the Azure portal. Select **Device enrollment** > **Windows enrollment** > **Devices**.
 - The **Azure AD devices** pane in the Intune in the Azure portal. Select **Devices** > **Azure AD Devices**.