fix metadata - ms.devlang

Author: mairaw

docs/build/vscpp-step-1-create.md

@@ -4,7 +4,7 @@ description: "Create a Hello World console app in Visual C++"
 ms.custom: "mvc"
 ms.date: 12/12/2017
 ms.topic: "tutorial"
-ms.devlang: "C++"
+ms.devlang: "cpp"
 ms.assetid: 45138d70-719d-42dc-90d7-1d0ca31a2f54
 ---
 # Create a C++ console app project
@@ -120,4 +120,4 @@ If red squiggles appear under anything in the source code editor, check that you
 
 [Go back](#add-code-to-the-source-file).
 
-<iframe src="" height="0" width="0" frameborder="0" name="frameTarget" />
+<iframe src="" height="0" width="0" frameborder="0" name="frameTarget" />