Update virtual-functions.md

Author: homing1

docs/cpp/virtual-functions.md

@@ -4,6 +4,7 @@ title: "Virtual Functions"
 ms.date: "09/10/2019"
 helpviewer_keywords: ["functions [C++], virtual functions", "derived classes [C++], virtual functions", "virtual functions"]
 ms.assetid: b3e1ed88-2a90-4af8-960a-16f47deb3452
+adobe-target: true
 ---
 # Virtual Functions