Assign a class to the module (or a link) and use the following script. In the script, the class is added to the Divi slider module and the second class in the script is used to explicitly target the title link. The script is then added in the theme options, integrations, head.

<script>
jQuery(document).ready(function(){
jQuery('.hws_header_slider .et_pb_slide_title
a').attr('target','_blank');
});
</script>
Code language: PHP (php)