add referecnes for translations

threejs/lessons/threejs-fundamentals.md

@@ -489,4 +489,5 @@ to support legacy browsers look into a <a href="https://babeljs.io">transpiler</
 </div>
 
 <!-- needed for out of date translations -->
-<a href="threejs-geometry.html"></a>
+<a href="threejs-geometry.html"></a>
+<a href="Geometry"></a>