Left over reference to kiss_path.sh

[Akeboshiwind]

As I understand it, kiss_path.sh was removed due to kisslinux/repo#209.

There's one or two references still hanging around to it in the docs, e.g in the install instructions: https://github.com/kisslinux/website/blob/master/site/install.txt#L852

[dylanaraps]

Fixed thanks!