Fix broken quickstart link

docs/sources/index.rst

@@ -26,9 +26,9 @@ frequently.
 
 For an overview of Docker, please see the `Introduction
 <http://www.docker.io>`_. When you're ready to start working with
-Docker, we have a `quick start </gettingstarted>`_ and a more in-depth
-guide to :ref:`ubuntu_linux` and other `installation </installation>`_
-paths including prebuilt binaries, Vagrant-created VMs, Rackspace and
-Amazon instances.
+Docker, we have a `quick start <http://www.docker.io/gettingstarted>`_
+and a more in-depth guide to :ref:`ubuntu_linux` and other
+`installation </installation>`_ paths including prebuilt binaries,
+Vagrant-created VMs, Rackspace and Amazon instances.
 
 Enough reading! :ref:`Try it out! <running_examples>`