[docs] Fix the docs for production class generation #31933
Merged
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The docs are not aligned with the actual code. At this very moment the class generation for the "dev" environment and the "prod" environment is different:
^ notice no hyphen before the counter ID in the prod one
See also the code:
https://github.com/mui/material-ui/blob/master/packages/mui-styles/src/createGenerateClassName/createGenerateClassName.js#L69
I believe it's a typo, but changing this logic would introduce a breaking change, so I'm suggesting at least updating the docs.