internal link is broken with Html::addHtml

[lalop]

This is:

• a bug report
• a feature request
• not a usage question (ask them on https://stackoverflow.com/questions/tagged/phpword)

Expected Behavior

When adding internal link via Html::addHtml with a tag like <a href="#anchor">link to anchor</a> I'm expecting to get an intra-doc link.

Current Behavior

Currently there is no link at all, only the content link to anchor

How to Reproduce

<?php
require __DIR__ . '/vendor/autoload.php';

$phpWord = new \PhpOffice\PhpWord\PhpWord();
$section = $phpWord->addSection();
PhpOffice\PhpWord\Shared\Html::addHtml($section, '<a href="#anchor">link to anchor</a>');

Context

• PHP version: 7
• PHPWord version: master