feat(examples): use query tag for query parameter binding

[miclle]

Summary

Replace form tag with query tag in QueryUsersRequest for more semantic clarity when binding query parameters.

Changes

• Changed form tag to query tag in QueryUsersRequest struct
• This makes the intent clearer for GET request query parameters

Test plan

• Tested the example works correctly with query parameters

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.00%. Comparing base (313aeab) to head (aa79188).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #53   +/-   ##
=======================================
  Coverage   96.00%   96.00%           
=======================================
  Files          16       16           
  Lines         726      726           
=======================================
  Hits          697      697           
  Misses         22       22           
  Partials        7        7           

Flag	Coverage Δ
unittests	96.00% <ø> (ø)

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