Update the address to send the bank account details to

@gabrieldamours I've created this MR, but you might want to edit further the onboarding course to provide more precise information to newcomers when they write to you about this. Anything you put in the onboarding course will be something you don't have to repeat every time afterwards. :)

Also, note that I will need the exact info that Transferwise requires to create recipients - and those change based on the recipient's country. Generally, what I do is that I go to Transferwise, and take a screenshot of the info they request, and send this to the newcomer (or list them in the body of the email).

Also keep in mind that the country of the bank account recipient must match the country of the invoices (if not, a proof of ownership of the bank account must be provided). The address on the invoices must be exactly the one from the contract - so we'll need a step somewhere where I provide this to you - this could be something to add to the onboarding template that @bradenm has created.