docs(Git Hooks): add colors option for lefthook example 📝

[torabit]

Summary

#872

The git error log output by Lefthook outputs ANSI escape code as is, so we need to add an option to display plain text.
It took me a little while to get to this information, but wouldn't it be more helpful to include it by default in the Lefthook Example in the Git Hook section?

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[Conaclos]

Thanks! Congratulations on your first contribution to Open Source projects :)