fix name operation type

[Thykof]

attempt to fix #1131 by renaming the variables.

Delivery Quality Checklist

• Breaking Changes in API:
  Does this PR introduce breaking changes in the API?

  • If yes, have you considered making it backward compatible?
  • If backward compatibility is not considered, set the "breaking-change" label.

• Changelog:

  • For bugfix PR, set the "bugfix" label
  • If this change should not appear in changelog, use "ignore-for-changelog" label

• Version Update Handling:
  Have you ensured that the version update by user is handled correctly?

• PR Dependency:
  Does this PR depend on another PR?

  • If yes, is it necessary for the dependency to be released prior to merging this one?

• Documentation:

  • Are any necessary changes made to user-facing documentation?
  • Confirm that API documentation is updated with any relevant changes.
  • Check that README and other documentation files are accurate and current.

[codecov]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (a10d232) 25.27% compared to head (846e393) 25.27%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1247   +/-   ##
=======================================
  Coverage   25.27%   25.27%           
=======================================
  Files          25       25           
  Lines        1559     1559           
=======================================
  Hits          394      394           
  Misses       1152     1152           
  Partials       13       13           

Files	Coverage Δ
pkg/node/sendoperation/rolls.go	66.66% <80.00%> (ø)
pkg/node/sendoperation/sendoperation.go	20.91% <80.00%> (ø)

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