Filter Dublin Core relation

Since SEOPress 2.7.2

function sp_dublin_core_relation($html) {
//you can add here all your conditions as if is_page(), is_category() etc..
	$html = '<meta name="dc.relation" content="https://www.seopress.org/" />';
	return $html;
}
add_filter('seopress_dublin_core_relation', 'sp_dublin_core_relation');