Update _index.md
* Update _index.md
Update docs; you don't need kustomize post-processing to make this change.
@@ -243,4 +243,4 @@ You should also be able to see log messages emitted by various Gloo Edge compone
In this guide we showed you how to integrate Datadog with Gloo Edge and Envoy proxies. It's important to remember that the changes made to the gateway-proxy ConfigMap and Deployment should also be updated in the Helm values file you use to deploy Gloo Edge. This is especially important if you are using Helm version 2, which does not gracefully handle out-of-band changes. It is also possible to configure these settings before Gloo Edge is installed by using a custom values file with the Helm installation.
-The full list of Helm values is available in the [docs]({{% versioned_link_path fromRoot="/reference/helm_chart_values/" %}}). In particular the value `gatewayProxies.gatewayProxy.podTemplate.extraAnnotations.NAME` can be updated to add the required annotations. You can use [Last Mile Patching for Helm]({{% versioned_link_path fromRoot="/installation/gateway/kubernetes/helm_advanced/" %}}) to patch the produced Helm chart to include the ConfigMap alterations prior to deployment, or simply make the edits post deployment.
+The full list of Helm values is available in the [docs]({{% versioned_link_path fromRoot="/reference/helm_chart_values/" %}}). The value `gatewayProxies.gatewayProxy.podTemplate.extraAnnotations.NAME` can be updated to add the required annotations, and the value `gatewayProxies.gatewayProxy.stats.routePrefixRewrite` controls the `route.prefix_rewrite` above.
