[Fix] Fix typo: tpc -> tcp

[caicancai]

Purpose of the pull request

Brief change log

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This pull request is code cleanup without any test coverage.

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This pull request is already covered by existing tests, such as (please describe tests).

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This change added tests and can be verified as follows:

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If your pull request contain incompatible change, you should also add it to docs/docs/en/guide/upgrede/incompatible.md

[caicancai]

cc @SbloodyS PATL, thanks

[SbloodyS]

LGTM.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 40.70%. Comparing base (834c320) to head (86120ef).

❗ Current head 86120ef differs from pull request most recent head 82b0789

Please upload reports for the commit 82b0789 to get more accurate results.

Additional details and impacted files

@@             Coverage Diff              @@
##                dev   #16160      +/-   ##
============================================
- Coverage     40.71%   40.70%   -0.01%     
- Complexity     5246     5247       +1     
============================================
  Files          1385     1385              
  Lines         46109    46109              
  Branches       4923     4923              
============================================
- Hits          18771    18770       -1     
- Misses        25412    25414       +2     
+ Partials       1926     1925       -1     

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[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud