Document "iCloud Drive" option

Co-authored-by: Yann Bertrand <5855339+yannbertrand@users.noreply.github.com>

Author: amomchilov

defaults.yml

@@ -454,7 +454,10 @@ categories:
               text: Desktop. Accompanied by `NewWindowTargetPath = "file:///bob/Desktop/"`.
             - value: PfDo
               text: Documents. Accompanied by `NewWindowTargetPath = "file:///Users/bob/Documents/"`.
+            - value: PfID
+              text: iCloud Drive. Accompanied by `file:///Users/bob/Library/Mobile%20Documents/com~apple~CloudDocs`.
             - value: PfAF
+              default: true
               text: Recents. Accompanied by `NewWindowTargetPath = "file:///System/Library/CoreServices/Finder.app/Contents/Resources/MyLibraries/myDocuments.cannedSearch/"`.
             - value: PfLo
               text: Other location. Accompanied by `NewWindowTargetPath = "file:///the/other/location/`.