Document behavior of input date format

[guzman-raphael]

If respects client browser config or is it location based?

[Synicix]

https://stackoverflow.com/questions/7372038/is-there-any-way-to-change-input-type-date-format

TLDR: Date format is handle by the browser implmentation, typically it depends on the lanague that the brower is set to.

[Synicix]

From my japnaese broswer

[guzman-raphael]

@Synicix Adding this to the issue here is not sufficient to document this. We need to include this in the developer/user documentation.