http-basic doc need amending

In the [http-basic section](https://funcool.github.io/buddy-auth/latest/#http-basic) it says to add `(wrap-authentication)`, but it seems that `(wrap-authorization)` middleware is also needed.

Without this middleware no 'basic auth' dialog is shown to enter the username/password.

This caught me out because it didn't even occur to me that I needed to add "authorization" to do "authentication".

Thanks!