cb_relay_timeout: fix typo, set relay timeout, not server timeout

Fixes a bug where setting the timeout in the relay section of
sudo_logsrvd.conf would actually set the server timeout instead.

Reported by and fix from exp0l0zzz

Author: millert

logsrvd/logsrvd_conf.c

@@ -835,7 +835,7 @@ cb_relay_timeout(struct logsrvd_config *config, const char *str, size_t offset)
     if (errstr != NULL)
 	debug_return_bool(false);
 
-    config->server.timeout.tv_sec = timeout;
+    config->relay.timeout.tv_sec = timeout;
 
     debug_return_bool(true);
 }