elpa-markdown-toc binary package in Ubuntu Plucky arm64

 Markdown-toc is a simple Emacs addon that parses a Markdown buffer
 and creates a handy table of contents. It can also refresh an
 existing TOC to reflect updates to the body of the document. When
 writing a standalone markdown document, when one cannot rely on
 external tools, rely on markdown-toc. It provides greater control
 over output levels and headings than Pandoc's --toc.

Source package