Update links from qt-project.org to qt.io

Change-Id: I0882a82457eaef37e84f81ad3bc44e1d65cec4ef
Reviewed-by: Venugopal Shivashankar <venugopal.shivashankar@digia.com>

examples/webenginewidgets/browser/data/defaultbookmarks.xbel

@@ -6,10 +6,10 @@
         <bookmark href="http://qt.io/">
             <title>Qt Home Page</title>
         </bookmark>
-        <bookmark href="http://qt-project.org/doc/">
+        <bookmark href="http://doc.qt.io/">
             <title>Qt Documentation</title>
         </bookmark>
-        <bookmark href="http://planet.qt-project.org/">
+        <bookmark href="http://planet.qt.io/">
             <title>Qt Blog</title>
         </bookmark>
         <bookmark href="http://www.qtcentre.org/">
@@ -18,7 +18,7 @@
         <bookmark href="http://qt-apps.org/">
             <title>Qt-Apps.org</title>
         </bookmark>
-        <bookmark href="http://wiki.qt.io/?title=OnlineCommunities">
+        <bookmark href="http://wiki.qt.io/OnlineCommunities">
             <title>Online Communities</title>
         </bookmark>
         <bookmark href="http://www.chromium.org/">