[pandoc] Change Default Install Location

[mattcargile]

The default location is "$env:LOCALAPPDATA\pandoc\pandoc.exe". If a user elevates, their choco process with another user this makes it cumbersome.

My fix is below. Can we add the --IA parameters to the installer namely ALLUSERS and APPLICATIONFOLDER. I would assume we would want to default to an install for all the users much like choco will warn the user if they aren't running as an Admin.

choco install pandoc --ia=ALLUSERS=1 --ia=APPLICATIONFOLDER=C:\ProgramData\chocolatey\lib\pandoc\tools -y