fix typo

Author: zyxkad

handler.go

@@ -187,7 +187,7 @@ func (cr *Cluster) GetHandler() http.Handler {
 						u.Scheme = "https"
 						u.Host = net.JoinHostPort(host, strconv.Itoa((int)(cr.publicPort)))
 
-						logDebugf("Redirecting from %s to %s", req.Host, u.String())
+						log.Debugf("Redirecting from %s to %s", req.Host, u.String())
 
 						rw.Header().Set("Location", u.String())
 						rw.Header().Set("Content-Length", "0")