docs: add configuration examples for known-enum-bases option

[imtoopunkforyou]

Сonfiguration examples for known-enum-bases option

I have updated the documentation for the known-enum-bases option.
This is an addition to my previous PR

Checklist

• I have double checked that there are no unrelated changes in this pull request (old patches, accidental config files, etc)
• I have created at least one test case for the changes I have made
• I have updated the documentation for the changes I have made
• I have added my changes to the CHANGELOG.md

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (2143873) to head (eec8064).

Additional details and impacted files

@@            Coverage Diff            @@
##            master     #3518   +/-   ##
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  Coverage   100.00%   100.00%           
=========================================
  Files          365       365           
  Lines        12181     12180    -1     
  Branches       834       834           
=========================================
- Hits         12181     12180    -1     

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