Docs: Update PHP_CodeSniffer repository link

[rodrigoprimo]

PHP_CodeSniffer has moved to a new GitHub organization. The squizlabs/PHP_CodeSniffer repository is now archived and the project is actively maintained at https://github.com/PHPCSStandards/PHP_CodeSniffer.

See: squizlabs/PHP_CodeSniffer#3932

Summary by CodeRabbit

• Documentation
  • Updated the PHP_CodeSniffer reference link in the Coding Standards section of the contributing guidelines.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: f5b013b8-fcc1-4ac7-a1b5-b9109dfbeec5

📥 Commits

Reviewing files that changed from the base of the PR and between 702f6b1 and 4245eb7.

📒 Files selected for processing (1)

• CONTRIBUTING.md

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📝 Walkthrough

Walkthrough

The CONTRIBUTING.md documentation was updated to change the PHP_CodeSniffer reference link from the squizlabs repository to the PHPCSStandards-maintained repository. This is a single-line URL change in the coding standards documentation section.

Changes

Cohort / File(s)	Summary
Documentation Link Update CONTRIBUTING.md	Updated PHP_CodeSniffer tool documentation link from squizlabs to PHPCSStandards repository.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~1 minute

Poem

🐰 A link was changed with care today,
From squizlabs to standards' way,
The coding path now points just right,
PHP_CodeSniffer shines so bright! ✨

🚥 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 accurately reflects the main change: updating the PHP_CodeSniffer repository link in documentation from the archived squizlabs organization to the active PHPCSStandards organization.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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