Fix error when warning about pagy configuration redundancy

[ellnix]

Pull Request

Related issue

Fixes #294

What does this PR do?

• ...

PR checklist

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• Does this PR fix an existing issue, or have you listed the changes applied in the PR description (and why they are needed)?
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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (e5ad4d1) 89.04% compared to head (1331d3f) 89.04%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #295   +/-   ##
=======================================
  Coverage   89.04%   89.04%           
=======================================
  Files          10       10           
  Lines         657      657           
=======================================
  Hits          585      585           
  Misses         72       72           

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[brunoocasali]

LGTM!

[brunoocasali]

bors merge

[meili-bors]

Build succeeded:

• integration-tests (Rails 6.1 with Ruby 2.7)
• integration-tests (Rails 6.1 with Ruby 3.0)
• integration-tests (Rails 6.1 with Ruby 3.1)
• integration-tests (Rails 7 with Ruby 2.7)
• integration-tests (Rails 7 with Ruby 3.0)
• integration-tests (Rails 7 with Ruby 3.1)
• linter-check
• smoke-test