Retrieve edit term URL.
<?php get_edit_term_link( $term, $taxonomy, $object_type ); ?>
$edit_link = esc_url( get_edit_term_link( $tag->term_id, $taxonomy, $this->screen->post_type ) );
function get_edit_tag_link( $tag_id, $taxonomy = 'post_tag' ) { return apply_filters( 'get_edit_tag_link', get_edit_term_link( $tag_id, $taxonomy ) ); }