Update the documentation for ExitRelay
In #21530 (moved) in 0.3.5, we changed the default of ExitRelay: relays used to be exits by default, but now they are not.
But we forgot to update the documentation.
In #21530 (moved) in 0.3.5, we changed the default of ExitRelay: relays used to be exits by default, but now they are not.
But we forgot to update the documentation.