weglot_replace_link

This filter allow you to modifiy the dom after the link has benne replaced.

This filter lets you modify the DOM while Weglot replaces links. It receives the DOM string being processed and must return it.

add_filter( 'weglot_replace_link', 'custom_weglot_replace_link' );
function custom_weglot_replace_link( $dom ) {
    // Modify $dom here.
    return $dom;
}