Update Readme.md

Author: anshooarora

Readme.md

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 ## ExtentReports 4 .NET Core  [![NuGet](https://img.shields.io/nuget/v/extentreports.svg)](https://www.nuget.org/packages/ExtentReports) [![Join the chat at https://gitter.im/anshooarora/extentreports-csharp](https://badges.gitter.im/anshooarora/extentreports-csharp.svg)](https://gitter.im/anshooarora/extentreports-csharp?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) [![Codacy Badge](https://api.codacy.com/project/badge/Grade/8d4e66d07b9e4ebca7cef7c5b5eb7ba2)](https://www.codacy.com/app/anshooarora/extentreports-csharp?utm_source=github.com&utm_medium=referral&utm_content=extent-framework/extentreports-csharp&utm_campaign=Badge_Grade) ![](https://img.shields.io/github/license/extent-framework/extentreports-csharp.svg?style=plastic)
 
-.NET Core/Standard
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 ### Documentation
 
 View [extentreports.com](http://extentreports.com/docs/versions/4/net/) for complete documentation.