fix: correct span names

[matsuu]

Related issue(s)

Checklist

• I have read the contributing guidelines.
• I have referenced an issue containing the design document if my change
  introduces a new feature.
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• I have added tests that prove my fix is effective or that my feature
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Further Comments

[CLAassistant]

All committers have signed the CLA.

[alnr]

Thank you!