Markdown documents not supported?

I went to try out Omniparse (looks great!) but when I went to upload my documents I was met with an error stating markdown documents aren't supported.

This really surprised me given most wikis, knowledge bases, code / library / project documentation / PKI data etc... are markdown (aka plain text).

Why would I want to parse data that's already Markdown you might ask?

- You might have a directory / git repo full of markdown across various depths of directories.
- Markdown could contain base64 or linked images that need to be parsed.
- Markdown could contain code blocks or inline HTML.
- Markdown could be very long and need to be chunked.

Reproduce the upload error described in the issue using a Markdown document, then trace the upload and document-parsing entry points that reject it. Check how the project handles linked images, code blocks, inline HTML, and long documents, and verify that supported Markdown files are accepted and processed as intended.

Escrita pelo modelo de indexação a partir do texto da issue.