[ISSUE #7881] Add parameter configuration explanations for jRaft controller

[RongtongJin]

Which Issue(s) This PR Fixes

Fixes #7881

Brief Description

Add parameter configuration explanations for jRaft controller

How Did You Test This Change?

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 42.90%. Comparing base (a33f1d1) to head (c3b1baf).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #7882      +/-   ##
=============================================
- Coverage      42.95%   42.90%   -0.05%     
+ Complexity      9917     9913       -4     
=============================================
  Files           1190     1190              
  Lines          86038    86042       +4     
  Branches       11081    11081              
=============================================
- Hits           36957    36918      -39     
- Misses         44499    44555      +56     
+ Partials        4582     4569      -13     

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