update install-xtrn.js to use xtrn.ini

install-xtrn.js fails to run

• Installing /sbbs/xtrn/gooble/install-xtrn.ini use Ctrl-C to abort *

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Install file: $Id: install-xtrn.ini,v 1.1 2020/04/17 08:09:04 rswindell Exp $ [ Gooble Gooble ] A Pac-Man knock-off for Synchronet BBS By: echicken -at- bbs.electronicchicken.com Categories: Games Sub-categories: Classic, Clone, JavaScript !Failed to read /sbbs/ctrl/xtrn.cnf