[DOCS] Fixed link to docker content

docs/reference/setup/install.asciidoc

@@ -41,7 +41,7 @@ Images are available for running Elasticsearch as Docker containers. They may be
 downloaded from the Elastic Docker Registry. The default image ships with
 {xpack-ref}/index.html[X-Pack] pre-installed.
 +
-<<docker>>
+{ref}/docker.html[Install {es} with Docker]
 
 [float]
 [[config-mgmt-tools]]