Change the Related Posts Title

/**
 * Change the Related Posts title "You Might Also Like" by "Related Posts"
 */
function myprefix_related_posts_title() {
	return 'Related Posts';
}
add_filter( 'ocean_related_posts_title', 'myprefix_related_posts_title' );

All PHP snippets should be added via a child theme's functions.php file.