Fix date formatting

[Hlavtox]

Questions	Answers
Description?	We were happily calling a function with a wrong argument count. This fixes it.
Type?	bug fix
BC breaks?	no
Deprecations?	no
Fixed ticket?	Fixes tests in PrestaShop/PrestaShop#34521, which revealed this issue when I typed displayDate method.
How to test?	See steps below.

What is wrong

The method Tools::displayDate was changed between 1.7.8 and 8.0.0, and this module was calling the old version, resulting in some errors in developer mode.
https://github.com/PrestaShop/PrestaShop/blob/1951311beb2497bb97659aded1b643905403becc/classes/Tools.php#L981
https://github.com/PrestaShop/PrestaShop/blob/f64f657366caf66e01f3b4fccaad4b77989a1257/classes/Tools.php#L923

How to test (do these steps on both versions)

1. Get 1.7.8 and 8.0.0
2. Install this module. (Make sure to uninstall distribution api.)
3. Go to BO > Advanced parameters > Performance and set Forced compilation and disable cache in Smarty section.
4. Go to settings of this module and check that you see date normally in the template list, like below. ⬇️

[Hlavtox]

@florine2623 Added some steps to reproduce. :-)

[florine2623]

Hello @Hlavtox ,

I can't see the new date format 😞

I have followed your steps. Also, cleared cache from PS and from browser as well. The old format is still displayed.

Am I missing something ? ^^

[Hlavtox]

Yes, just the fact that you don't have any errors makes this QA ✅. :-)

[florine2623]

Yes indeed, the date format changes on your country. I didn't think about that, sorry ^^