update metadata (dotnet#49)

* update metadata

* update author

Author: mairaw

dotnet/docfx.json

@@ -54,13 +54,16 @@
       "defaultDevLang": "csharp",
       "breadcrumb_path": "/dotnet/roslyn_dotnet_toc/breadcrumb/toc.json",
       "apiPlatform": "dotnet",
-      "author": "dotnet-bot",
+      "author": "sfilipi",
+      "ms.author": "johalex",
       "uhfHeaderId": "MSDocsHeader-DotNet",
       "apiPlatform": "dotnet",
       "searchScope": [".NET"],
+      "ms.topic": "managed-reference",
+      "ms.prod": "dotnet-ml-api",
       "feedback_system": "GitHub",
       "feedback_github_repo": "dotnet/docs",
-      "feedback_product_url": "https://developercommunity.visualstudio.com/spaces/61/index.html"       
+      "feedback_product_url": "https://github.com/dotnet/machinelearning"
     },
     "fileMetadata": {},
     "template": [],