Update docfx.json metadata (#38)

* Update docfx.json

Add missing metadata

* Update docfx.json

Add ms.prod

* Update docfx.json

* Update docfx.json

* Add prod to index.md

dotnet-desktop-guide/docfx.json

@@ -140,6 +140,18 @@
         "net/winforms/**/**.md": "Windows Forms .NET",
         "framework/wpf/**/**.md": "WPF .NET Framework",
         "net/wpf/**/**.md": "WPF .NET"
+      },
+      "ms.technology": {
+        "framework/winforms/**/**.md": "dotnet-winforms",
+        "framework/wpf/**/**.md": "dotnet-wpf",
+        "net/winforms/**/**.md": "dotnet-winforms",
+        "net/wpf/**/**.md": "dotnet-wpf"
+      },
+      "ms.prod": {
+        "framework/winforms/**/**.md": "dotnet-framework",
+        "framework/wpf/**/**.md": "dotnet-framework",
+        "net/winforms/**/**.md": "dotnet-desktop",
+        "net/wpf/**/**.md": "dotnet-desktop"
       }
     },
     "template": [],

dotnet-desktop-guide/index.md

@@ -1,6 +1,7 @@
 ---
 title: Desktop Guide for WPF and Windows Forms
 description: Introduction to the Desktop Guide for WPF and Windows Forms for both .NET 5 and .NET Framework.
+ms.prod: dotnet-desktop
 ms.date: "08/30/2020"
 ---