add comment for config assert

[Nicole00]

No description provided.

[codecov-commenter]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (c372132) 51.75% compared to head (925963b) 51.78%.

Files	Patch %	Lines
...la/com/vesoft/exchange/common/config/Configs.scala	25.00%	0 Missing and 3 partials ⚠️

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Additional details and impacted files

@@             Coverage Diff              @@
##             master     #188      +/-   ##
============================================
+ Coverage     51.75%   51.78%   +0.02%     
  Complexity       89       89              
============================================
  Files            21       21              
  Lines          1907     1908       +1     
  Branches        378      378              
============================================
+ Hits            987      988       +1     
  Misses          732      732              
  Partials        188      188              

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