add support for `start_index` in `html` links extraction (#2600)
add support for start_index in html links extraction (closes #2625)
Testing
```
from unstructured.partition.html import partition_html
from unstructured.staging.base import elements_to_json
html_text = """<html>
<p>Hello there I am a <a href="/link">very important link!</a></p>
<p>Here is a list of my favorite things</p>
<ul>
<li><a href="https://en.wikipedia.org/wiki/Parrot">Parrots</a></li>
<li>Dogs</li>
</ul>
<a href="/loner">A lone link!</a>
</html>"""
elements = partition_html(text=html_text)
print(elements_to_json(elements))
```
---------
Co-authored-by: Michael Niestroj <michael.niestroj@unblu.com>
Co-authored-by: christinestraub <christinemstraub@gmail.com>
Co-authored-by: ryannikolaidis <1208590+ryannikolaidis@users.noreply.github.com>
Co-authored-by: christinestraub <christinestraub@users.noreply.github.com>
Co-authored-by: Ronny H <138828701+ron-unstructured@users.noreply.github.com>
unstructured
0506aff7 - add support for `start_index` in `html` links extraction (#2600)
