Fix addition of SSL redirect middleware in secure API defaults

Hey James,

I'm in the process of replacing listora/ring-ssl in one of our applications with ring-defaults and noticed redirects stopped working.

I'm not sure which way round you'd want to fix this, but in one place `:redirect-ssl` is used, and in another `:ssl-redirect`. I went with `:redirect-ssl` because it's closer to how I'd say it, but I don't feel too strongly either way.

I haven't tested this, and will workaround by `assoc`'ing in the expected key.