Update docfx.json with ms.update-cycle setting (#1121)

Adding ms.update-cycle setting in docfx.json to reflect tier level support.

Author: wadepickett

iis/docfx.json

@@ -74,6 +74,9 @@
         "web-development-reference/native-code-api-reference/**/*.md": "reference",
         "extensions/database-manager-reference/**/*.md": "reference",
         "wmi-provider/**/*.md": "reference"
+      },
+      "ms.update-cycle": {
+        "**/**.{md,yml}": "3650-days"
       }
     },
     "template": [],