libtext-markdown-perl binary package in Ubuntu Focal amd64

 Text::Markdown is a Perl module that provides an alternate implementation of
 the Markdown implementation by John Gruber (see the markdown package). It is
 a slower implementation, but better maintained.
 .
 Markdown is a markup language to convert structured text into (X)HTML. Its
 main design goal is to make the input text as readable as possible. For this,
 the syntax is highly inspired by the format of plain text email. Markdown
 supports features like headers, *emphasis*, code blocks, blockquotes and
 links. For maximum flexibility, it also allows embedding HTML tags, both
 within paragraphs (eg. <span>), and at block level (<div>, <table>).

Source package