The wiki pn codehaus is no more

fixes MCHECKSTYLE-364
diff --git a/src/site/apt/index.apt.vm b/src/site/apt/index.apt.vm
index 2b92534..551e138 100644
--- a/src/site/apt/index.apt.vm
+++ b/src/site/apt/index.apt.vm
@@ -61,9 +61,7 @@
 * Usage
 
   General instructions on how to use the Checkstyle Plugin can be found on the {{{./usage.html}usage page}}. Some more
-  specific use cases are described in the examples given below. Last but not least, users occasionally contribute
-  additional examples, tips or errata to the
-  {{{http://docs.codehaus.org/display/MAVENUSER/Checkstyle+Plugin}plugin's wiki page}}.
+  specific use cases are described in the examples given below.
 
   In case you still have questions regarding the plugin's usage, please have a look at the {{{./faq.html}FAQ}} and feel
   free to contact the {{{./mail-lists.html}user mailing list}}. The posts to the mailing list are archived and could