use default relay

usr/share/install_helper.sh

@@ -63,8 +63,9 @@ fi
 if [ -z "${my_relay}" ]; then
   echo "What relay will you be using? (press enter for default)"
   echo ""
-  read -p "relay [default: wss://telebit.cloud]: " my_relay
+  read -p "relay [default: wss://www.telebit.cloud]: " my_relay
   echo ""
+  my_relay=${2:-wss://www.telebit.cloud}
   # UX - just want a smooth transition
   sleep 0.5
 fi