Update README.md

Author: subashd

README.md

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 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](./license/LICENSE)
 [![GitHub stars](https://img.shields.io/github/stars/citrix/citrix-k8s-ingress-controller.svg)](https://github.com/citrix/citrix-k8s-ingress-controller/stargazers)
 [![HitCount](http://hits.dwyl.com/citrix/citrix-k8s-ingress-controller.svg)](http://hits.dwyl.com/citrix/citrix-k8s-ingress-controller)
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+[![Artifact Hub](https://img.shields.io/endpoint?url=https://artifacthub.io/badge/repository/netscaler)](https://artifacthub.io/packages/search?repo=netscaler)
 ---
 
 # Citrix ingress controller