Update README.md

Author: Olexandr88

README.md

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 [![CircleCI](https://img.shields.io/circleci/project/github/RequestNetwork/requestNetwork/master.svg)](https://circleci.com/gh/RequestNetwork/requestNetwork)
 [![Commit Activity](https://img.shields.io/github/commit-activity/m/RequestNetwork/requestNetwork.svg?color=green)](https://github.com/RequestNetwork/requestNetwork/pulse/monthly)
-![CodeRabbit Pull Request Reviews](https://img.shields.io/coderabbit/prs/github/RequestNetwork/requestNetwork?color=orange)
+[![CodeRabbit Pull Request Reviews](https://img.shields.io/badge/CodeRabbit-PR%20Reviews-orange)](https://www.coderabbit.ai/)
 
 [Request][website-url] is a decentralized network built on top of Ethereum, which allows anyone, anywhere to request a payment. A full description of the protocol may be found in our [whitepaper][whitepaper-url].