Hi!

I'm trying to create some internal documentation for a project that has a mix of custom and third-party code in it. Some of the third-party code has Markdown documentation I'd like to include, however some of the page titles aren't working, I think because these third-party docs use an alternative style of Markdown, where the headers are designated using either = or -, for example:

This is the title
=============

This is some content

This is a second title
------------------

Some more content

This is a final title
------------------

The end

In this case the title is not detected, and the filename README.md results in a title in the sidebar of 'Index'.

Is there anything I can do here to support this style of header? Do you have any suggestions?

Thank you!