Merge pull request kubernetes#86431 from SamyCoenen/patch-1

Update README.md

Author: k8s-ci-robot

staging/src/k8s.io/metrics/README.md

@@ -26,7 +26,7 @@ Kubernetes resources.
 The API is intended to be implemented by monitoring pipeline vendors, on
 top of their metrics storage solutions.
 
-If you want to implement this an API server for this API, please see the
+If you want to implement this as an API server for this API, please see the
 [kubernetes-incubator/custom-metrics-apiserver](https://github.com/kubernetes-incubator/custom-metrics-apiserver)
 library, which contains the basic infrastructure required to set up such
 an API server.
@@ -38,9 +38,7 @@ Import Path: `k8s.io/metrics/pkg/apis/custom_metrics`.
 This API allows consumers to access resource metrics (CPU and memory) for
 pods and nodes.
 
-The API is implemented by Heapster
-(https://github.com/kubernetes/heapster) and metrics-server
-(https://github.com/kubernetes-incubator/metrics-server).
+The API is implemented by [metrics-server](https://github.com/kubernetes-sigs/metrics-server).
 
 Import Path: `k8s.io/metrics/pkg/apis/metrics`.
 
@@ -56,10 +54,9 @@ page](http://kubernetes.io/community/).
 
 You can reach the maintainers of this repository at:
 
-- Slack: #sig-instrumentation (on https://kubernetes.slack.com -- get an
-  invite at slack.kubernetes.io)
-- Mailing List:
-  https://groups.google.com/forum/#!forum/kubernetes-sig-instrumentation
+- Slack: [#sig-instrumentation channel](https://kubernetes.slack.com/messages/sig-instrumentation), you can get an
+  invite at [slack.kubernetes.io](https://slack.kubernetes.io).
+- [Mailing List](https://groups.google.com/forum/#!forum/kubernetes-sig-instrumentation)
 
 ### Code of Conduct