documentations 404 page numbering starts with 0.1

[benaryorg]

I was viewing the documentation when I (do not ask how) visited the site /std/copy/index.html.

I immediately noticed that the numbering began with

0.1 Search

I looked up the corresponding sources (/src/doc/not_found.md).

I am neither sure if this is a bug, nor am I sure if this is already fixed as I am not familiar with the structure of your documentation.

[brson]

I agree it would be better to have something else as section headers here.