Problem: wrong semantic in spec format

[angelicawill]

The spec format example in docs/CONTRIBUTING.md shows specs starting with _Goal:_ metadata and going straight to ## Overview — no H1

h2 goes without h1?

use rumdl, it will fix it all automatically

Originally posted by @zolotokrylin in https://github.com/holdex/marketing-website/pull/1033#discussion_r3172204494

Solution

Pick one of the two:

Option A — add a # Feature Name H1 to the format example. The H1 sits between the _Goal:_ metadata and ## Overview. Matches what every existing spec already does (# Case Studies Pages in markdown-pages.md, # Article Discoverability in article-discoverability.md). One H1 per file, then H2 sections — standard markdown structure.

_Goal: _

# Feature Name

## Overview
...

Option B — promote the existing ## headings to #.

_Goal: _

# Overview
...

# [Section]
...