Add settings examples for gocritic

[sebastien-rosset]

Add gocritic settings in the example file.

[boring-cyborg]

Hey, thank you for opening your first Pull Request !

[CLAassistant]

All committers have signed the CLA.

[ldez]

I think it's better to reference the documentation instead of the gocritic command line.

[ldez]

Thanks 👍

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