Fix a copy/paste error in a comment.

Tom

2014-10-29 8fa8cbcf9db40fea41d7a555c86428aede7f25e8

 src/main/java/com/gitblit/wicket/panels/CommentPanel.java

@@ -89,7 +89,7 @@
         }
      }.setVisible(ticket != null && ticket.number > 0));

      final IModel<String> markdownPreviewModel = new Model<String>();
      final IModel<String> markdownPreviewModel = Model.of();
      markdownPreview = new Label("markdownPreview", markdownPreviewModel);
      markdownPreview.setEscapeModelStrings(false);
      markdownPreview.setOutputMarkupId(true);