View file vendor/laravel/framework/src/Illuminate/Mail/resources/views/html/footer.blade.php
<tr> <td> <table class="footer" align="center" width="570" cellpadding="0" cellspacing="0" role="presentation"> <tr> <td class="content-cell" align="center"> {{ Illuminate\Mail\Markdown::parse($slot) }} </td> </tr> </table> </td> </tr>