Issue with function getSFUrl

[sandra2n]

Hi,

Just to signal an issue on function getSFUrl in file src/Controller/AdminThemeManagerController.php.
The test on using or not the domain should be reversed.

Right now it add th domain when it should not and do not add it when it should:
$domain = $useDomain ? '' : \Tools::getShopDomainSsl(true);
should become
$domain = $useDomain ? \Tools::getShopDomainSsl(true) : '';

Thank you