[doc] Document the builtin configuration

[vkarak]

Closes #3555.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.22%. Comparing base (d00d143) to head (538c48b).
⚠️ Report is 2 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #3558      +/-   ##
===========================================
- Coverage    91.23%   91.22%   -0.02%     
===========================================
  Files           62       62              
  Lines        13525    13525              
===========================================
- Hits         12340    12338       -2     
- Misses        1185     1187       +2     

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