Fix CI status badge

After renaming the repository `stackstorm-ha` -> `stackstorm-k8s`, the badge stopped working.
This PR fixes the URL.

Author: arm4b

README.md

@@ -1,5 +1,5 @@
 # `stackstorm-ha` Helm Chart
-[![Build Status](https://circleci.com/gh/StackStorm/stackstorm-ha/tree/master.svg?style=shield)](https://circleci.com/gh/StackStorm/stackstorm-ha)
+[![Build Status](https://circleci.com/gh/StackStorm/stackstorm-k8s/tree/master.svg?style=shield)](https://circleci.com/gh/StackStorm/stackstorm-k8s)
 [![Artifact HUB](https://img.shields.io/endpoint?url=https://artifacthub.io/badge/repository/stackstorm-ha)](https://artifacthub.io/packages/helm/stackstorm/stackstorm-ha)
 
 K8s Helm Chart for running StackStorm cluster in HA mode.