docs: Fix LFX Health Score badge URL in README.md

The URL must have changed, because the badge is currently broken in the readme.

Signed-off-by: Michael Crenshaw <350466+crenshaw-dev@users.noreply.github.com>

README.md

@@ -5,7 +5,7 @@
 [![GoDoc](https://img.shields.io/static/v1?label=godoc&message=reference&color=blue)](https://pkg.go.dev/helm.sh/helm/v4)
 [![CII Best Practices](https://bestpractices.coreinfrastructure.org/projects/3131/badge)](https://bestpractices.coreinfrastructure.org/projects/3131)
 [![OpenSSF Scorecard](https://api.scorecard.dev/projects/github.com/helm/helm/badge)](https://scorecard.dev/viewer/?uri=github.com/helm/helm)
-[![LFX Health Score](https://insights.production.lfx.dev/api/badge/health-score?project=helm)](https://insights.linuxfoundation.org/project/helm)
+[![LFX Health Score](https://insights.linuxfoundation.org/api/badge/health-score?project=helm)](https://insights.linuxfoundation.org/project/helm)
 
 Helm is a tool for managing Charts. Charts are packages of pre-configured Kubernetes resources.