README: mention --untrusted-daemon

when connecting the wallet to a daemon on a tor hidden service

README.md

@@ -547,6 +547,8 @@ setting the following configuration parameters and environment variables:
    as well.
 * Do NOT pass `--detach` when running through torsocks with systemd, (see
   [utils/systemd/monerod.service](utils/systemd/monerod.service) for details).
+* If you use the wallet with a Tor daemon via the loopback IP (eg, 127.0.0.1:9050),
+  then use `--untrusted-daemon` unless it is your own hidden service.
 
 Example command line to start monerod through Tor: