Add (back) in css class for pre, pelt skin only. Fix for: FOR-329

git-svn-id: https://svn.apache.org/repos/asf/forrest/trunk@1821834 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/main/webapp/skins/pelt/css/basic.css b/main/webapp/skins/pelt/css/basic.css
index 9ae5716..a243295 100644
--- a/main/webapp/skins/pelt/css/basic.css
+++ b/main/webapp/skins/pelt/css/basic.css
@@ -38,6 +38,8 @@
   clear: both;
 }
 
+.pre { white-space: pre;}
+
 .note, .warning, .fixme {
   clear:right;
   border: solid black 1px;