Currently for section headings we use fourth level markdown heading
level (####). We do not have levels two or three.
We can use standard incremental levels for heading adornments i.e
1) =========
2) ##
3) ###
ect.
Since this document is likely referenced by maintainers when guiding new
contributors it can save maintainer time to be able to quickly reference
a section in the coding stlye guide. If we add numbers to each heading
(like the kernel stlye guide) then maintainers can say:
Nice patch, please see section 3 of the coding style guide and ...
So, this patch makes two changes
- Use incremental level heading adornments
- Add a number to each section heading