Fix SVN urls.

Fixes: #723



git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@4988 d4fa192b-c00b-0410-8231-f00ffab90ce4

doc/sphinx/installation/install.rst

@@ -71,11 +71,11 @@ your system.  There is usually a binary package, try substituting
 
 To fetch the current (2.1) production branch:::
 
-	svn co http://varnish-cache.org/svn/varnish/branches/2.1
+	svn co http://varnish-cache.org/svn/branches/2.1
 
 To get the development source code:::
 
-	svn co http://varnish-cache.org/svn/varnish/trunk
+	svn co http://varnish-cache.org/svn/trunk
 
 Build dependencies on Debian / Ubuntu 
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