[FIX] l10n_es_dua: Fix README
[FIX] l10n_es_dua: Fix README

diagramsoftware/l10n-spain,Comunitea/l10n-spain,syci/l10n-spain,algiopensource/l10n-spain,diagramsoftware/l10n-spain,Comunitea/l10n-spain,syci/l10n-spain,algiopensource/l10n-spain,JuanjoA/l10n-spain,Comunitea/l10n-spain,JuanjoA/l10n-spain