[Doc]: update doc

[mohammad-taheri1]

Hi.

Based on current react version, nobody uses Class components anymore. Can I update README to functional components?

[ThinkerDreamer]

I, for one, would appreciate that! I have not used React Class components, only Functional components, so the docs are a bit confusing for me, specifically this page: https://apexcharts.com/docs/react-charts/

Edit: If anyone else like me is having trouble figuring this out, this article: https://tech.shaadi.com/2022/07/21/how-to-convert-class-components-to-function-components-in-react/ was helpful for me! It explains what to replace with what to convert a Class component to a Functional component. 👍🏻

[github-actions[bot]]

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