[Koha] language link

Dear community, · In opac and intranet pages there are a lnik which change language in which we want to correct ( <http://opac.flib.sci.am/cgi-bin/koha/opac-changelanguage.pl?language=hy-Armn> Հայերէն) a letter but can't find where that file is stored which contain that word. · Best Regards, · Arayik.