Change Related Posts Header for Properties CPT

gistfile1.txt

################################################################################
// Change Related Posts Header for Properties CPT
################################################################################
function jetpackme_related_posts_headline( $headline ) {
  if ( is_singular( 'properties' ) ) {
    $headline = sprintf(
            '<h3 class="jp-relatedposts-headline"><em>%s</em></h3>',
            esc_html( 'Similar Listings' )
            );
    return $headline;
  }
}
add_filter( 'jetpack_relatedposts_filter_headline', 'jetpackme_related_posts_headline' );

// Remove Context for Related Posts
add_filter( 'jetpack_relatedposts_filter_post_context', '__return_empty_string' );