[ISSUE #8222] Fix spelling errors in comments

[yx9o]

Fix #8222 .

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 42.87%. Comparing base (9c8fdb7) to head (e5d0876).

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #8224      +/-   ##
=============================================
- Coverage      42.94%   42.87%   -0.07%     
+ Complexity     10379    10364      -15     
=============================================
  Files           1270     1270              
  Lines          88727    88727              
  Branches       11407    11407              
=============================================
- Hits           38101    38045      -56     
- Misses         45931    45972      +41     
- Partials        4695     4710      +15     

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[yx9o]

Hi @RongtongJin , I want to contribute to https://github.com/apache/rocketmq/wiki/RIP-10-RocketMQ-Unit-Test, how can I do it?