Fix `sxhkd-keybinds` when no comments are above the keybind

[SIMULATAN]

Currently, the sxhkd-keybinds script only works with keybinds in the form:

# does things
super + p
	notify-send "Hey, I'm doing something!"

but not if you leave out the comment like this:

super + p
	notify-send "Hey, I'm doing something!"

This change requires knowledge with AWK (which I currently lack), and thus, I'd be grateful if someone could help me with this issue.