Update Caudal manual

[ZwergNaseXXL]

It's still showing a screenshot of the old version and makes no mention of the three different modes (Pendulum, Planets, Fish tank).
Not sure about other modules' manuals, might be worth skimming through them as well. But Caudal caught my attention.

[modlfo]

Thanks! there may be other outdated manuals. I will check them when I have some time.