chore: remove repetitive words

[longhutianjie]

remove repetitive words

PR Checklist:

• Have you read the CONTRIBUTING.md?
• Does your PR follow the C4 patch requirements?
• Have you rebased your work on top of the latest master?
• Have you checked your code compiles? (make)
• Have you included tests for any non-trivial functionality?
• Have you checked your code passes the unit tests? (make test)
• Have you checked your code formatting is correct? (go fmt)
• Have you checked your basic code style is fine? (golangci-lint run)
• If you added any dependencies, have you checked they do not contain any known vulnerabilities? (go list -json -m all | nancy sleuth)
• If your changes affect the client infrastructure, have you run the integration test?
• If your changes affect public APIs, does your PR follow the C4 evolution of public contracts?
• If your code changes public APIs, have you incremented the crate version numbers and documented your changes in the CHANGELOG.md?
• If you are contributing for the first time, please read the agreement in CONTRIBUTING.md now and add a comment to this pull request stating that your PR is in accordance with the Developer's Certificate of Origin.

Thank you for your code, it's appreciated! :)

[mmsqe]

Hi @longhutianjie, can you help to sign the commit?

[longhutianjie]

Hi @longhutianjie, can you help to sign the commit?

Thanks! Signed

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 36.55%. Comparing base (632d9de) to head (53dd622).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1079      +/-   ##
==========================================
+ Coverage   34.34%   36.55%   +2.20%     
==========================================
  Files          93      101       +8     
  Lines       14105    14350     +245     
==========================================
+ Hits         4844     5245     +401     
+ Misses       8319     8158     -161     
- Partials      942      947       +5     

Flag	Coverage Δ
integration_tests	25.79% <ø> (ø)
integration_tests_byzantine	11.27% <ø> (ø)
integration_tests_gov	11.54% <ø> (ø)
integration_tests_grpc	11.54% <ø> (ø)
integration_tests_ibc	27.52% <ø> (ø)
integration_tests_ledger	11.53% <ø> (ø)
integration_tests_slow	11.53% <ø> (ø)
integration_tests_solomachine	11.32% <ø> (ø)
integration_tests_upgrade	11.54% <ø> (ø)
unit_tests	11.86% <ø> (?)

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