replaced www.codeigniter.com with codeigniter.com
diff --git a/user_guide/installation/upgrade_150.html b/user_guide/installation/upgrade_150.html
index 456e4da..0fb5e81 100644
--- a/user_guide/installation/upgrade_150.html
+++ b/user_guide/installation/upgrade_150.html
@@ -40,7 +40,7 @@
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">

 <tr>

 <td id="breadcrumb">

-<a href="http://www.codeigniter.com/">CodeIgniter Home</a> &nbsp;&#8250;&nbsp;

+<a href="http://codeigniter.com/">CodeIgniter Home</a> &nbsp;&#8250;&nbsp;

 <a href="../index.html">User Guide Home</a> &nbsp;&#8250;&nbsp;

 Upgrading from 1.4.1 to 1.5.0

 </td>

@@ -107,8 +107,8 @@
 | This item allows you to set the filename/classname prefix when extending

 | native libraries.  For more information please see the user guide:

 |

-| http://www.codeigniter.com/user_guide/general/core_classes.html

-| http://www.codeigniter.com/user_guide/general/creating_libraries.html

+| http://codeigniter.com/user_guide/general/core_classes.html

+| http://codeigniter.com/user_guide/general/creating_libraries.html

 |

 */

 $config['subclass_prefix'] = 'MY_';

@@ -171,7 +171,7 @@
 <a href="../index.html">User Guide Home</a>&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;

 Next Topic:&nbsp;&nbsp;<a href="../overview/at_a_glance.html">CodeIgniter at a Glance</a>

 </p>

-<p><a href="http://www.codeigniter.com">CodeIgniter</a> &nbsp;&middot;&nbsp; Copyright &#169; 2007 &nbsp;&middot;&nbsp; <a href="http://ellislab.com/">Ellislab, Inc.</a></p>

+<p><a href="http://codeigniter.com">CodeIgniter</a> &nbsp;&middot;&nbsp; Copyright &#169; 2007 &nbsp;&middot;&nbsp; <a href="http://ellislab.com/">Ellislab, Inc.</a></p>

 </div>

 

 </body>