Fix the links to Worg.

The new site is part of orgmode.org.

ORGWEBPAGE/index.org

@@ -88,16 +88,16 @@ More information on this page: http://repo.or.cz/w/org-mode.git
 
 ** Worg - user-driven knowledge-base about org-mode
 
-[[http://www.legito.net/worg/][Worg]], created by [[http://www.cognition.ens.fr/~guerry/][Bastien Guerry]], is a setup to allow users to jointly
+[[http://orgmode.org/worg/][Worg]], created by [[http://www.cognition.ens.fr/~guerry/][Bastien Guerry]], is a setup to allow users to jointly
 edit a number of Org-mode files containing documentation about
 Org-mode.  This is something like a wiki, but with the advantage that
 you do not have to be online to modify a file.  If you'd like to
 contribute your own setup, screenshots, tutorials etc, please go to
-[[http://www.legito.net/worg/][the Worg page]], and start from there.
+[[http://orgmode.org/worg/][the Worg page]], and start from there.
 
 ** Tutorials
 
-   [[http://www.legito.net/worg/org-tutorials/index.php][Tutorials and screencasts]] are maintained by the [[http://www.legito.net/worg][Worg project]].
+   [[http://orgmode.org/worg/org-tutorials/index.php][Tutorials and screencasts]] are maintained by the [[http://orgmode.org/worg][Worg project]].
 
 ** Survey