Update manual.md

[trebmuh]

• adds Whaaa to the overview of the plugins
• removes the dry/wet control definition of Bitta since it doesn't exist
• one typo (controls/control)
• removes the "attack" control definition of Panda since it doesn't exist
• typos ("give", space, duplicate "the")
• start and preparation for Whaaa (please @harryhaaren , fill it with your words)

Hope that helps.

[harryhaaren]

Thanks, manually pulled patch, added short Whaaa description.

[trebmuh]

Thanks for the quick merge @harryhaaren !