Minor fix to config loading

[Luminarys]

Forgot to change some lines when adding in the i3 stuff, this fixes it.

[ddevault]

Maybe in the future we can just have a list of paths, like this:

static char *paths[] = {
    "$XDG_CONFIG_HOME/sway/config",
    "$HOME/sway/config",
    ...
}

[Luminarys]

Having a variable expander would probably be a good idea, I can go ahead and do this.