Fix Xorg path for Arch Linux
Fix Xorg path for Arch Linux

It has been moved: https://www.archlinux.org/packages/extra/x86_64/xorg-server/

Fixes: #1448

neutrinolabs/xrdp,PKRoma/xrdp,neutrinolabs/xrdp,neutrinolabs/xrdp,metalefty/xrdp,metalefty/xrdp,PKRoma/xrdp,PKRoma/xrdp,metalefty/xrdp