doc: update file ref path
Update the adopters file path.
@@ -22,7 +22,7 @@ etcd is a distributed reliable key-value store for the most critical data of a d
etcd is written in Go and uses the [Raft][raft] consensus algorithm to manage a highly-available replicated log.
-etcd is used [in production by many companies](./Documentation/production-users.md), and the development team stands behind it in critical deployment scenarios, where etcd is frequently teamed with applications such as [Kubernetes][k8s], [locksmith][locksmith], [vulcand][vulcand], [Doorman][doorman], and many others. Reliability is further ensured by [**rigorous testing**](https://github.com/etcd-io/etcd/tree/master/functional).
+etcd is used [in production by many companies](./ADOPTERS.md), and the development team stands behind it in critical deployment scenarios, where etcd is frequently teamed with applications such as [Kubernetes][k8s], [locksmith][locksmith], [vulcand][vulcand], [Doorman][doorman], and many others. Reliability is further ensured by [**rigorous testing**](https://github.com/etcd-io/etcd/tree/master/functional).
See [etcdctl][etcdctl] for a simple command line client.
