docs: fix docs/concepts nested code-block format

[JabinGP]

Summary by CodeRabbit

• Documentation
  • Fixed Markdown code fence formatting in documentation examples for improved rendering and consistency.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

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Review profile: CHILL

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📥 Commits

Reviewing files that changed from the base of the PR and between d7d1860 and 89083e8.

📒 Files selected for processing (1)

• docs/concepts.md

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📝 Walkthrough

Walkthrough

This pull request adjusts Markdown code fence delimiters in the documentation from triple backticks to quadruple backticks within the 'Design: Add Dark Mode' section, maintaining all content integrity with a pure formatting update.

Changes

Cohort / File(s)	Summary
Documentation Formatting docs/concepts.md	Updated Markdown code fence delimiters from triple backticks (```) to quadruple backticks (````) in the 'Design: Add Dark Mode' section.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

🐰 Four backticks dance where three once stood,
A documentation tweak, so understood,
No logic bent, no features new—
Just prettier fences for all to view! ✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and accurately describes the main change: fixing the nested code-block format in the docs/concepts file by adjusting Markdown fence delimiters.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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[greptile-apps]

Greptile Summary

Fixed markdown formatting in the Design example by changing from triple to quadruple backticks for the outer code block that contains a nested code block diagram.

• Correctly applies markdown nested code-block syntax (outer block needs more backticks than inner block)
• Only modified the specific section that needed fixing (Design example at line 273)
• Other markdown code blocks in the file don't have nested blocks and don't need this fix

Confidence Score: 5/5

• This PR is completely safe to merge with no risk
• This is a simple documentation formatting fix that correctly applies markdown nested code-block syntax with no side effects or potential issues
• No files require special attention

Important Files Changed

Filename	Overview
docs/concepts.md	Fixed nested code-block formatting by using quadruple backticks for outer block

_{Last reviewed commit: 89083e8}