docs: fix incorrect programming language reference

[aacnsilva]

Description

Minor documentation fix - it is referenced that it is json code but it should be javascript code

Validation

Just documentation update.

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.

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Project	Deployment	Preview	Updated (UTC)
nodejs-org	Ready	Preview	Oct 18, 2025 0:56am

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.44%. Comparing base (f7c436e) to head (3a972f5).
⚠️ Report is 1 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8236      +/-   ##
==========================================
+ Coverage   76.43%   76.44%   +0.01%     
==========================================
  Files         115      115              
  Lines        9643     9643              
  Branches      317      317              
==========================================
+ Hits         7371     7372       +1     
+ Misses       2271     2270       -1     
  Partials        1        1              

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