SL-10147: Copy placeholder English text to supported NSIS languages.

indra/newview/installers/windows/lang_da.nsi

indra/newview/installers/windows/lang_de.nsi

indra/newview/installers/windows/lang_es.nsi

indra/newview/installers/windows/lang_fr.nsi

indra/newview/installers/windows/lang_it.nsi

indra/newview/installers/windows/lang_ja.nsi

indra/newview/installers/windows/lang_pl.nsi

indra/newview/installers/windows/lang_pt-br.nsi

indra/newview/installers/windows/lang_ru.nsi

indra/newview/installers/windows/lang_tr.nsi

indra/newview/installers/windows/lang_zh.nsi