site.changeTitle:before
$site, $title, $languageCode
return [
    'hooks' => [
        'site.changeTitle:before' => function ($site, $title, $languageCode) {
            // your code goes here
        }
    ]
]$site, $title, $languageCode
return [
    'hooks' => [
        'site.changeTitle:before' => function ($site, $title, $languageCode) {
            // your code goes here
        }
    ]
]