rename fibonacci-task to fibonacci-async-task

[amilajack]

This will help show that this is an async task. The links to this example must be changed in the docs as well

[kjvalencik]

👍 This is also the only task example that shows how to get data to it. The others only use unit structs. This would help discovery.

Although, maybe it's helpful for the basic task example to show passing an argument as well?

[amilajack]

@kjvalencik totally agree!