replace 'SysInfo.org' with 'Pacman's Portal'

Quote from SysInfo: >Startup Applications List.
Unfortunately, due to a change in my circumstances, the startup programs database here at Sysinfo.org will no longer be updated and the off-line downloads are no longer available. The version at Pacman's Portal will, however, continue to be updated and it's recommended that you refer to that site for more up to date information. The reason for this change in policy cannot be disclosed at this time but I hope you have enjoyed using the database here and thank you for your support and kind comments over the years. Paul Collins