Fix link to new screenshot

content/screens.cz.md

content/screens.da.md

content/screens.de.md

content/screens.en.md

content/screens.eo.md

content/screens.es.md

content/screens.fr.md

content/screens.hu.md

content/screens.it.md

content/screens.jp.md

content/screens.ko.md

content/screens.nl.md

content/screens.no.md

content/screens.pl.md

content/screens.pt.md

content/screens.ru.md

content/screens.sv.md

content/screens.tr.md

content/screens.uk.md

content/screens.zh.md