Update hpe-edgeline-el300.md

-------
cc: @batamig

Author: arielsaghiv

articles/defender-for-iot/organizations/appliance-catalog/hpe-edgeline-el300.md

@@ -9,7 +9,8 @@ ms.topic: reference
 
 This article describes the HPE Edgeline EL300 appliance for OT sensors or on-premises management consoles.
 
-Legacy appliances are certified but aren't currently offered as preconfigured appliances.
+> [!NOTE]
+> Legacy appliances are certified but aren't currently offered as preconfigured appliances.
 
 
 | Appliance characteristic |Details |