website: make a symlink for the manual at the root of the website

This will give us a shorter URL, that we can more easily refer to in the
documetation itself, in help texts, on IRC...

[Peter: Use buildroot.org everywhere]
Suggested-by: Arnout Vandecappelle <arnout@mind.be>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Arnout Vandecappelle <arnout@mind.be>
Cc: Peter Korsgaard <jacmet@uclibc.org>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

docs/website/contribute.html

@@ -26,7 +26,7 @@ There are many different ways to contribute:</p>
 </ul>
 
 <p>For more details on these topics, check out the
-<a href="http://buildroot.uclibc.org/downloads/manual/manual.html#_contributing_to_buildroot">
+<a href="http://buildroot.org/manual.html#_contributing_to_buildroot">
 Contributing to buildroot</a> chapter in the Buildroot manual. Thanks for your help!</p>
 
 <p>If you need any support yourself, have a look at <a href="./support.html">

docs/website/docs.html

@@ -11,7 +11,7 @@ things. It is available as:</p>
 
 <h4>Latest stable release</h4>
 <ul>
-  <li><a href="/downloads/manual/manual.html">Online HTML</a></li>
+  <li><a href="/manual.html">Online HTML</a></li>
   <li><a href="/downloads/manual/manual.pdf">PDF document</a></li>
   <li><a href="/downloads/manual/manual.text">ASCII text</a></li>
 </ul>

docs/website/manual.html

@@ -0,0 +1 @@
+/downloads/manual/manual.html