docs(heading): improve heading stories

[petergoes]

closes: #750

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Review	Updated (UTC)
candidate	Ready	Preview, Comment	Jan 5, 2026 1:41pm
candidate-storybook-non-conforming	Ready	Preview, Comment	Jan 5, 2026 1:41pm
candidate-storybook-test	Ready	Preview, Comment	Jan 5, 2026 1:41pm
evil-storybook	Ready	Preview, Comment	Jan 5, 2026 1:41pm

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (5836aaa) to head (df38162).
⚠️ Report is 74 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #779   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           28        28           
  Lines          310       315    +5     
  Branches        52        53    +1     
=========================================
+ Hits           310       315    +5     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[sonarqubecloud]

Quality Gate failed

Failed conditions
9.4% Duplication on New Code (required ≤ 3%)

See analysis details on SonarQube Cloud