feat(addon-doc): heading elements are not in a sequentially-descending order

[splincode]

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[lumberjack-bot]

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[bundlemon]

BundleMon

Unchanged files (5)

Status	Path	Size	Limits
✅	demo/browser/main.(hash).js	287.32KB	+10%
✅	demo/browser/vendor.(hash).js	247.15KB	+10%
✅	demo/browser/runtime.(hash).js	42.32KB	+10%
✅	demo/browser/styles.(hash).css	16.18KB	+10%
✅	demo/browser/polyfills.(hash).js	11.2KB	+10%

No change in files bundle size

Unchanged groups (1)

Status	Path	Size	Limits
✅	demo/browser/*..js	7.05MB	-

Final result: ✅

View report in BundleMon website ➡️

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