chore: remove repetitive words

[jimmycathy]

No description provided.

[vizipi]

Pull request analysis by VIZIPI

Below you will find who is the most qualified team member to review your code.
This analysis includes his/her work on the code included in this Pull request, in addition to their experience in code affected by these changes ( partly found within the list of potential missing files below )   Feedback always welcome

Reviewers with knowledge related to these changes

Match %	Person	Commit Count	Common Files
50.00%	EanCuznaivy	65	3
16.67%	jason-hoopox	3	1
16.67%	ssun0121	2	1
16.67%	YueZh127	1	1
16.67%	轩辕焮痕	1	1

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Potential missing files from this Pull request

files commonly committed with a subset of this pr, but not committed this time. (click to collapse)

File	Percentile	rate
contract/AElf.Contracts.MultiToken/TokenContract_Fees.cs	50.00%	1 out of 2 times

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Committed file ranks

(click to expand)

71.53%[...docs/tutorials/developing-smart-contracts/first-contract-]

82.88%[docs/resources/cli/methods.md]

71.53%[docs/protocol/blocks.md]

41.22%[docs/tutorials/__save.md]

58.29%[docs/resources/smart-contract-apis/consensus.md]

98.00%[...contract/AElf.Contracts.Election/ElectionContract_Candida]

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.70%. Comparing base (1842512) to head (473709f).

Additional details and impacted files

@@           Coverage Diff           @@
##              dev    #3541   +/-   ##
=======================================
  Coverage   90.70%   90.70%           
=======================================
  Files         663      663           
  Lines       25543    25543           
  Branches     2293     2293           
=======================================
  Hits        23168    23168           
  Misses       2259     2259           
  Partials      116      116           

Files	Coverage Δ
...f.Contracts.Election/ElectionContract_Candidate.cs	93.33% <ø> (ø)