[505720] Open help from the o.e.ecoretools.doc plugin 

Bug: 505720
Change-Id: Ie2a0b044ceab9c54cf8b59f24c33b23b7d708611

org.eclipse.emf.ecoretools.design/description/ecore.odesign

diff --git a/org.eclipse.emf.ecoretools.design/description/ecore.odesign b/org.eclipse.emf.ecoretools.design/description/ecore.odesign
index fbeae97..8c0a5a8 100644
--- a/org.eclipse.emf.ecoretools.design/description/ecore.odesign
+++ b/org.eclipse.emf.ecoretools.design/description/ecore.odesign
@@ -772,7 +772,7 @@
             <view name="views"/>
             <initialOperation>
               <firstModelOperations xsi:type="tool:ExternalJavaAction" name="Open Entities User Guide Action" id="org.eclipse.sirius.ui.business.api.action.openHelpSection">
-                <parameters name="href" value="/org.eclipse.emf.ecoretools.design/doc/user-guide.html#design.entities"/>
+                <parameters name="href" value="/org.eclipse.emf.ecoretools.doc/doc/EcoreTools User Manual.html#EntitiesDiagramEditor"/>
               </firstModelOperations>
             </initialOperation>
           </ownedTools>