fix: Update route file name in routing concepts

[chapman-cc]

The code block title src/routes/posts.tsx does not match against the line above posts.$postId.tsx

This pr fixes this typo

Summary by CodeRabbit

• Documentation
  • Updated routing guides with improved code examples that more accurately demonstrate dynamic route segment naming conventions in real-world implementations.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

Configuration used: defaults

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 3318878 and 1ab1f27.

📒 Files selected for processing (1)

• docs/router/routing/routing-concepts.md

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📝 Walkthrough

Walkthrough

This PR updates a code sample filename in the routing concepts documentation from src/routes/posts.tsx to src/routes/posts/$postId.tsx to accurately reflect the dynamic route structure being demonstrated.

Changes

Cohort / File(s)	Summary
Documentation docs/router/routing/routing-concepts.md	Updated React code sample filename from src/routes/posts.tsx to src/routes/posts/$postId.tsx to correctly represent the dynamic route structure.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Possibly related PRs

• docs: Fixed filenames #6675: Updates sample filenames/titles in router documentation to show dynamic segments and accurate file extensions.

Suggested reviewers

• Insik-Han
• SeanCassiere

Poem

🐰 A path, a name, now aligned at last,
Where $postId dances, not in the past,
The docs now gleam with clarity bright,
One little filename—set perfectly right! ✨

🚥 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 PR title accurately describes the main change: updating a route file name (from posts.tsx to posts/$postId.tsx) in the routing concepts documentation to correct a mismatch.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

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[nx-cloud]

View your CI Pipeline Execution ↗ for commit 1ab1f27

Command	Status	Duration	Result
nx run @benchmarks/bundle-size:build --outputSt...	✅ Succeeded	1m 31s	View ↗

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☁️ Nx Cloud last updated this comment at 2026-03-03 13:24:56 UTC

[github-actions]

Bundle Size Benchmarks

• Commit: 33188782e179
• Measured at: 2026-03-03T13:24:02.044Z
• Baseline source: history:33188782e179
• Dashboard: bundle-size history

Scenario	Current (gzip)	Delta vs baseline	Raw	Brotli	Trend
react-router.minimal	86.58 KiB	0 B (0.00%)	272.45 KiB	75.22 KiB	▅▅▅▅▅▅▅▅▅▅▅
react-router.full	89.61 KiB	0 B (0.00%)	282.78 KiB	77.90 KiB	▅▅▅▅▅▅▅▅▅▅▅
solid-router.minimal	35.88 KiB	0 B (0.00%)	107.56 KiB	32.26 KiB	▅▅▅▅▅▅▅▅▅▅▅
solid-router.full	40.21 KiB	0 B (0.00%)	120.61 KiB	36.13 KiB	▅▅▅▅▅▅▅▅▅▅▅
vue-router.minimal	51.75 KiB	0 B (0.00%)	147.54 KiB	46.50 KiB	▅▅▅▅▅▅▅▅▅▅▅
vue-router.full	56.55 KiB	0 B (0.00%)	163.12 KiB	50.86 KiB	▅▅▅▅▅▅▅▅▅▅▅
react-start.minimal	99.11 KiB	0 B (0.00%)	311.58 KiB	85.68 KiB	▅▅▅▅▅▅▅▅▅▅▅
react-start.full	102.50 KiB	0 B (0.00%)	321.39 KiB	88.63 KiB	▁▁▁▁███████
solid-start.minimal	48.19 KiB	0 B (0.00%)	145.13 KiB	42.67 KiB	▅▅▅▅▅▅▅▅▅▅▅
solid-start.full	53.68 KiB	0 B (0.00%)	161.08 KiB	47.37 KiB	▁▁▁▁███████

Trend sparkline is historical gzip bytes ending with this PR measurement; lower is better.