Not showing external project in HTML hierarchy class pages

The reference to to the external project was not closed properly.
The problem in the HTML code was discovered when looking at the example of issue #3791. On the 'hierarchy' page the reference to the external project didn't appear.

src/ftvhelp.cpp

@@ -304,7 +304,7 @@ void FTVHelp::generateLink(FTextStream &t,FTVNode *n)
     }
     else
     {
-      t << ">";
+      t << "\">";
     }
     t << convertToHtml(n->name);
     t << "</a>";