fix ut typo

[zhengbuqian]

/kind improvement

[sre-ci-robot]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 72.30%. Comparing base (3c46f4c) to head (1cadf07).
Report is 120 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##           main     #707       +/-   ##
=========================================
+ Coverage      0   72.30%   +72.30%     
=========================================
  Files         0       69       +69     
  Lines         0     4868     +4868     
=========================================
+ Hits          0     3520     +3520     
- Misses        0     1348     +1348     

see 69 files with indirect coverage changes

[cydrain]

/lgtm