Updating translation

In dektrium\yii2-user\views\registration\finish.php there is a message: 
Yii::t('user', 'We need to confirm your email address') that has no translation in any language.
In all language files there is a similar line that is not used anywhere inside project, so i'm proposing change of that unused line to one that is missing. I am guessing that somwhere in development pipeline, message in dektrium\yii2-user\views\registration\finish.php was changed but language files were never updated for that change.