Add comments to more FF13Fix.ini options

[danilo-bc]

I haven't found any reference on some of the options in the .ini file.

I think it can be updated with commentary for this block:

SwapEffect = -1
AlwaysActive = false
AutoFix = true
Multisample = 0
HideCursor = false
ForceHideCursor = false
BehaviorFlags = 0

and the ones in [Adapter] and [Borderless] (Borderless and ForceWindowedMode are obvious, but not the others)