Link to Docker Hub from Download page.

content/download.html

@@ -14,9 +14,10 @@ title: Download
     </div>
 
     <p>
-      We provide precompiled binaries and Docker images for most officially
-      maintained Prometheus components. If a component isn't listed here, check
-      the respective repository on Github for further instructions.
+      We provide precompiled binaries and <a href="https://hub.docker.com/r/prom/">Docker images</a>
+      for most officially maintained Prometheus components. If a component is
+      not listed here, check the respective repository on Github for further
+      instructions.
     </p>
     <p>
       There is also a constantly growing number of independently maintained