fixup: typo, relay selector doc

Author: dlon

docs/relay-selector.md

@@ -53,7 +53,7 @@ constraints the following default ones will take effect:
   - The first attempt will connect to a Wireguard relay on a random port
   - The second attempt will connect to a Wireguard relay on port 443
   - The third attempt will connect to a Wireguard relay over IPv6 (if IPv6 is configured on the host) on a random port
-- The fourth-to-seventh attempt will alternate between Wireguard and OpenVPN
+- The remaining attempts will alternate between Wireguard and OpenVPN
   - The fourth attempt will connect to an OpenVPN relay over TCP on port 443
   - The fifth attempt will connect to a Wireguard relay on a random port using Shadowsocks for obfuscation
   - The sixth attempt will connect to a Wireguard relay on a random port using [UDP2TCP obfuscation](https://github.com/mullvad/udp-over-tcp)