Update README.md

Author: brunobritodev

README.md

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 [![Build status](https://ci.appveyor.com/api/projects/status/08v6mg6q439x16xt?svg=true)](https://ci.appveyor.com/project/brunohbrito/jp-project)
 [![Build Status](https://dev.azure.com/brunohbrito/Jp-Project/_apis/build/status/brunohbrito.JP-Project)](https://dev.azure.com/brunohbrito/Jp-Project/_build/latest?definitionId=1)
 [![License](https://img.shields.io/github/license/brunohbrito/jp-project.svg)](LICENSE)
+![DOCS](https://readthedocs.org/projects/jp-project/badge/?version=latest&style=flat)
 
 Jp Project is a Open Source Admin UI for IdentityServer4.