docs: add missing Options section

[BHyeonKim]

Prerequisites checklist

• I have read the contributing guidelines.

AI acknowledgment

• I did not use AI to generate this PR.
• (If the above is not checked) I have reviewed the AI-generated content before submitting.

What is the purpose of this pull request?

To follow the convention proposed in eslint/eslint#20196: every rule doc should have an Options section, even if the rule has no options, so readers can tell at a glance whether a rule is configurable.

What changes did you make? (Give an overview)

• Added a ## Options section ("This rule has no options.") to 9 rule docs that lacked one.
• Fixed 4 rule docs that used ### Options instead of ## Options, and adjusted their option subsections from #### to ### accordingly.

Related Issues

refs eslint/eslint#20196

Is there anything you'd like reviewers to focus on?

Additional comments

Disclosure: I'm a participant of open source contribution program OSSCA

Summary by CodeRabbit

• Documentation
  • Added clear “Options” sections to multiple rule pages, including explicit notes when rules have no configurable options.
  • Standardized heading hierarchy across rule documentation for improved consistency and readability.
  • Preserved all existing option descriptions and rule behavior.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Advanced

Run ID: 291a6ca5-6563-46a6-a111-78ec12023d23

📥 Commits

Reviewing files that changed from the base of the PR and between 876e8b1 and 43c47a2.

📒 Files selected for processing (13)

• docs/rules/font-family-fallbacks.md
• docs/rules/no-duplicate-imports.md
• docs/rules/no-duplicate-keyframe-selectors.md
• docs/rules/no-empty-blocks.md
• docs/rules/no-important.md
• docs/rules/no-invalid-at-rule-placement.md
• docs/rules/no-invalid-at-rules.md
• docs/rules/no-invalid-named-grid-areas.md
• docs/rules/no-unmatchable-selectors.md
• docs/rules/prefer-logical-properties.md
• docs/rules/selector-complexity.md
• docs/rules/use-baseline.md
• docs/rules/use-layers.md

Included review availability: Your plan provides up to 2 included reviews per hour; 1 remains after this review.

---

📝 Walkthrough

Walkthrough

The rule documentation adds missing Options sections and normalizes option heading levels. No rule behavior or option content changes.

Changes

Rule documentation options alignment

Layer / File(s)	Summary
Missing Options sections docs/rules/font-family-fallbacks.md, docs/rules/no-duplicate-imports.md, docs/rules/no-duplicate-keyframe-selectors.md, docs/rules/no-empty-blocks.md, docs/rules/no-important.md, docs/rules/no-invalid-at-rule-placement.md, docs/rules/no-invalid-at-rules.md, docs/rules/no-invalid-named-grid-areas.md, docs/rules/no-unmatchable-selectors.md	Adds an Options section stating that each rule has no options.
Options heading normalization docs/rules/prefer-logical-properties.md, docs/rules/use-baseline.md, docs/rules/use-layers.md	Promotes the Options headings and option subsection headings by one Markdown level.
Selector complexity heading normalization docs/rules/selector-complexity.md	Promotes the Options heading and all thirteen option subsection headings by one Markdown level.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~5 minutes

Change: Other

Merge Risk: ⚪ Minimal · up to 43c47

This documentation-only change aligns rule pages with the stated Options-section convention and is ready to merge.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the primary documentation change: adding missing Options sections. It is concise and directly related to the changeset, which also normalizes existing Options headings.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}

[DMartens]

Changes LGTM, thanks. Leaving open for others to look over.

[Pixel998]

LGTM, thanks!