Calendar : short days names not translating

[julien-bo]

Hi,

When using calendar/ calendarpicker, the short days names (Su, Mo, Tu,...) are not translated when changing the locale.

You can see it directly on the documentation : https://docs.metroui.org.ua/calendar.html in the "Internationalisation" part.

I've tried with fr-FR with no success.

Thanks in advance and thanks for tour work !