[MSKINS-86] class prettyprint not added to pre tags

Previous regex did not work

git-svn-id: https://svn.apache.org/repos/asf/maven/skins/branches/maven-fluido-skin-1.3.x@1647915 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/main/resources/META-INF/maven/site.vm b/src/main/resources/META-INF/maven/site.vm
index d9965e1..ef1a00f 100644
--- a/src/main/resources/META-INF/maven/site.vm
+++ b/src/main/resources/META-INF/maven/site.vm
@@ -1143,7 +1143,7 @@
               #set ( $sourceStyle = "prettyprint" )
             #end
 
-            $bodyContent.replaceAll( "<div class=\"source\">\\s*<pre>", "<div class=\"source\"><pre class=\"$sourceStyle\">" ).replaceAll( "class=\"bodyTable\"", "class=\"table table-striped\"" )
+            $bodyContent.replaceAll( "<div class=\"source\">(\r?\n)?<pre>", "<div class=\"source\"><pre class=\"$sourceStyle\">" ).replaceAll( "class=\"bodyTable\"", "class=\"table table-striped\"" )
           #end
         </div>
       #if ( $sideBarEnabled )