[docs] enhance component code block

[YeSuX]

Clear and concise description of the problem

https://next.mui.com/x/react-charts/pie/

Suggested solution

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Alternative

No response

Additional context

No response

Validations

• [X] Follow our Code of Conduct
• [X] Read the Contributing Guide.
• [X] Check that there isn't already an issue that request the same feature to avoid creating a duplicate.