fix hard-coding Riseup as provider name for domain black.riseup.net
The provider setup screen showed "black.riseup.net" instead of "Riseup", because the string comparison to Riseup's lilypad domain failed. This MR fixes that.
The provider setup screen showed "black.riseup.net" instead of "Riseup", because the string comparison to Riseup's lilypad domain failed. This MR fixes that.