fix: Update curl command example in documentation

[vfiruz97]

Description

This PR fixes a small inconsistency in the Relic documentation.
The example curl command has been updated to use the same URL as shown in the previous step of the guide. This helps keep the documentation consistent and avoids confusion for users following the tutorial step by step.

Related Issues

• N/A

Pre-Launch Checklist

• This pull request updates the example curl command in the documentation to match the URL shown in the previous step. This ensures consistency and avoids confusion for users following the tutorial.] This update focuses on a single feature or bug fix. (For multiple fixes, please submit separate PRs.)
• I have read and followed the Dart Style Guide and formatted the code using dart format.
• I have referenced at least one issue this PR fixes or is related to.
• I have updated/added relevant documentation (doc comments with ///), ensuring consistency with existing project documentation.
• I have added new tests to verify the changes.
• All existing and new tests pass successfully.
• I have documented any breaking changes below.

Breaking Changes

• Includes breaking changes.
• No breaking changes.

Additional Notes

This is a documentation-only change and does not affect any runtime behavior or APIs.

[vfiruz97]

This is a small fix to avoid reader confusion. In the curl example, the age is 37, but the output shows 27. @vlidholt take a look please.

[marcelomendoncasoares]

Thanks for the fix, @vfiruz97!

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.97%. Comparing base (dbfd440) to head (51feca2).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #313   +/-   ##
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  Coverage   91.97%   91.97%           
=======================================
  Files          97       97           
  Lines        3728     3728           
  Branches     1904     1904           
=======================================
  Hits         3429     3429           
  Misses        299      299           

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