Update to use latest comrak crate, 0.31.0

Brett Walkerrequested to merge
20-update-to-use-latest-comrak-crate into main

What does this MR do and why?

Updates to comrak 0.31.0, which adds support for the subscript option and enhances the description list syntax.

Diff: https://github.com/kivikakk/comrak/compare/v0.29.0...v0.31.0

Closes #20 (closed)

Edited by Brett Walker

Merge request reports