clarify uninstall

etc/minetestserver-install-git-all-backends.sh

@@ -103,6 +103,7 @@ fi
 # minetest;
 echo -e "\n\n\e[1;33mYou can run Minetest Server by typing \"minetestserver\" in a terminal, but using mtsenliven.py is recommended instead and keeps a config file for what world and subgame you want via minetestinfo.py.\e[0m"
 echo "The only known uninstall method is:"
+echo "  cd $HOME/Downloads/minetest"
 echo "  sudo xargs rm < install_manifest.txt"
 echo "  # as per http://irc.minetest.net/minetest/2015-08-06"
 # based on https://forum.minetest.net/viewtopic.php?f=42&t=3837 (below)