Point to %SystemRoot%\SysWOW64\rundll32.exe for 32-bit injection

Pointing SKIF to invoke rundll32.exe using %SystemRoot%\SysWOW64\rundll32.exe instead will lower the number of rundll32.exe processes required from 3 to 2, as the 64-bit proxy process otherwise used will not be necessary.

This is something I’ve personally used on and off for over a year now, and I do not expect the change to introduce any issues.