Hello @hitesh_srtpl,
Please check here https://devdocs.magento.com/#/individual-contributors
> Make sure you have selected Magento ver 2.3 at the top left bar
If you found any issue or updating related issue of any topic then you will create an issue on here then we will update documentation. https://github.com/magento/devdocs/issues
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If my answer is useful, please Accept as Solution & give Kudos
@gelanivishal I already checked here and here. It should be 2.3 user guide but when we open a pdf file it displays 2.2 version's pdf file