content(migration): fix typo + improve texting

[AugustinMauroy]

Description

• fixing typo in code snippets
• adding a badge
• fixing heading level
• modifying paragraph to be declarative instead of "this codemod handle this"
• Remove copy pasta paragraph

Related Issues

No related Issues

Check List

• I have read the Contributing Guidelines and made commit messages that follow the guideline.
• I have run pnpm format to ensure the code follows the style guide.
• I have run pnpm test to check if all tests are passing.
• I have run pnpm build to check if the website builds without errors.
• I've covered new added functionality with unit tests if necessary.

[vercel]

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Project	Deployment	Preview	Updated (UTC)
nodejs-org	Ready	Preview	Nov 1, 2025 9:49am

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.61%. Comparing base (a5c7eae) to head (c44a976).
⚠️ Report is 7 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8291      +/-   ##
==========================================
+ Coverage   76.59%   76.61%   +0.02%     
==========================================
  Files         117      117              
  Lines        9746     9751       +5     
  Branches      328      328              
==========================================
+ Hits         7465     7471       +6     
+ Misses       2279     2278       -1     
  Partials        2        2              

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[Copilot]

Pull Request Overview

This PR updates the website badge configuration to promote new migration guides and improves the migration documentation with consistency fixes and clarifications.

• Updated website badge to highlight migration guides for October 30 - November 15, 2025
• Improved consistency in migration documentation by standardizing terminology and formatting
• Enhanced code examples by adding missing import statements

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
apps/site/site.json	Updated website badge dates, title, and link to promote migration guides
apps/site/pages/en/blog/migrations/v22-to-v24.mdx	Added "EOL" expansion, removed version specificity, standardized heading levels, and updated require statement to use node: prefix
apps/site/pages/en/blog/migrations/v14-to-v16.mdx	Removed duplicate codemod section and added missing import statements to examples
apps/site/pages/en/blog/migrations/v12-to-v14.mdx	Changed "recipe" to "codemod" for consistent terminology

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