fix: config-docs-generator uninlined-format-args and collapsible-if clippy warnings

[Jiloc]

Description

While looking at the clippy warnings that came out with 1.89 I realized config-docs-generator also had some clippy warnings that needed to be fixed since 1.88.

• Fixed uninlined-format-args and collapsible-if clippy warnings.
• Remove export RUSTFLAGS="${RUSTFLAGS:-} -A mismatched-lifetime-syntaxes" now that those warnings have been fixed in develop.

All tests still pass. Also the CI step that uses this binary still succesfully creates the documentation https://github.com/stacks-network/stacks-core/actions/runs/16816574654/job/47635550986?pr=6359

Applicable issues

• fixes #

Additional info (benefits, drawbacks, caveats)

Checklist

• Test coverage for new or modified code paths
• Changelog is updated
• Required documentation changes (e.g., docs/rpc/openapi.yaml and rpc-endpoints.md for v2 endpoints, event-dispatcher.md for new events)
• New clarity functions have corresponding PR in clarity-benchmarking repo
• New integration test(s) added to bitcoin-tests.yml

[obycode]

LGTM!

[codecov]

Codecov Report

❌ Patch coverage is 84.48276% with 9 lines in your changes missing coverage. Please review.
✅ Project coverage is 79.55%. Comparing base (c21aea7) to head (2578c7d).
⚠️ Report is 6 commits behind head on develop.

Files with missing lines	Patch %	Lines
...ib/tools/config-docs-generator/src/extract_docs.rs	80.00%	8 Missing ⚠️
...ols/config-docs-generator/src/generate_markdown.rs	94.44%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #6359      +/-   ##
===========================================
+ Coverage    75.81%   79.55%   +3.73%     
===========================================
  Files          552      552              
  Lines       351807   351788      -19     
===========================================
+ Hits        266724   279862   +13138     
+ Misses       85083    71926   -13157     

Files with missing lines	Coverage Δ
...ols/config-docs-generator/src/generate_markdown.rs	98.49% <94.44%> (+7.46%)	⬆️
...ib/tools/config-docs-generator/src/extract_docs.rs	95.57% <80.00%> (+10.04%)	⬆️

... and 248 files with indirect coverage changes

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[github-actions]

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.