Rename variable in reuse example.

[kklein]

Checklist

• Added a CHANGELOG.rst entry

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.73%. Comparing base (a4858da) to head (fa1d269).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #95   +/-   ##
=======================================
  Coverage   94.73%   94.73%           
=======================================
  Files          15       15           
  Lines        1806     1806           
=======================================
  Hits         1711     1711           
  Misses         95       95           

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