Fixed links on gettingstarted to point to the right places in docs

docs/sources/gettingstarted/index.html

@@ -99,14 +99,14 @@
                         <p>Consider adding docker to your <code>PATH</code> for simplicity.</p>
                     </li>
 
-                    Continue with the <a href="examples/hello_world.html#hello-world">Hello world</a> example.
+                    Continue with the <a href="http://docs.docker.io/en/latest/examples/hello_world/">Hello world</a> example.
                 </ol>
             </section>
 
             <section class="contentblock">
                 <h2>Contributing to Docker</h2>
 
-                <p>Want to hack on Docker? Awesome! We have some <a href="/documentation/contributing/contributing.html">instructions to get you started</a>. They are probably not perfect, please let us know if anything feels wrong or incomplete.</p>
+                <p>Want to hack on Docker? Awesome! We have some <a href="http://docs.docker.io/en/latest/contributing/contributing/">instructions to get you started</a>. They are probably not perfect, please let us know if anything feels wrong or incomplete.</p>
             </section>
 
         </div>
@@ -117,8 +117,8 @@
                     vagrant and an Ubuntu virtual machine.</strong></p>
 
                 <ul>
-                    <li><a href="installation/macos.html">Mac OS X and other linuxes</a></li>
-                    <li><a href="installation/windows.html">Windows</a></li>
+                    <li><a href="http://docs.docker.io/en/latest/installation/macos/">Mac OS X and other linuxes</a></li>
+                    <li><a href="http://docs.docker.io/en/latest/installation/windows/">Windows</a></li>
                 </ul>
 
             </section>

docs/sources/index.html

@@ -87,7 +87,7 @@
 
 
                 <div style="display: block; text-align: center;">
-                    <a class="btn btn-custom btn-large" href="gettingstarted/index.html">Let's get started</a>
+                    <a class="btn btn-custom btn-large" href="gettingstarted/">Let's get started</a>
                 </div>