I want to convert technical documentation web page which has big TOC tree that
navigates other pages to one markdown document. For example :

<https://docs.microsoft.com/en-us/cpp/cpp/cpp-language-reference?view=vs-2017>
├──
<https://docs.microsoft.com/en-us/cpp/cpp/lexical-conventions?view=vs-2017>
├──
<https://docs.microsoft.com/en-us/cpp/cpp/basic-concepts-cpp?view=vs-2017>
├── ...

I have tried downloading all site with HTTRACK and converting all downloaded
HTML files to markdown using pandoc with Makefile.

But HTTRACK has downloaded HTML files in a random way. Currently, I have 385
HTML file and organizing all these files in a correct order manually
impossible. Is there a trick to convert TOC tree documentation pages to one
markdown document?