erp5_corporate_identity_test: user should manually create Introduction element for reference table

bt5/erp5_corporate_identity_test/PathTemplateItem/web_page_module/template_test_book_input_001_en_html.html

@@ -101,6 +101,7 @@
 	</tbody>
 </table>
 </section>
+<h1>Introduction</h1>
 ${WebPage_insertTableOfReferences}
 <h1>Synthese</h1> 
 <p>This document is a high level overview measures taken by Foo for Bar project. </p>