Update formatting.php

[seoadd]

Теперь будут генерироваться нормальные ссылки для Кириллических символов.

[dev-101]

This depends on Cyrillic variant, Russian is not the only one, as we discussed this before.
In some variants, for example, this is more appropriate transliteration to latin:

"ц"=>"c"
"ч"=>"c"
"ш"=>"s"

instead of:

"ц"=>"ts"
"ч"=>"ch"
"ш"=>"sh"