Update update_birdnet.sh

scripts/update_birdnet.sh

@@ -12,6 +12,7 @@ sudo ln -sf $my_dir/* /usr/local/bin/
 if ! grep python3 <(head -n1 $my_dir/analyze.py);then
   echo "Ensure all python scripts use the virtual environment"
   sed -si "1 i\\#\!$(realpath $(dirname $my_dir))/BirdNET-Pi/birdnet/bin/python3" $my_dir/*.py
+fi
 if ! grep PRIVACY_MODE /etc/birdnet/birdnet.conf;then
   sudo -u${USER} echo "PRIVACY_MODE=off" >> /etc/birdnet/birdnet.conf
 fi