Fixed a missed reference

javiereguiluz · javiereguiluz · commit 46fd93077ad8 · 2018-09-28T15:33:08.000+02:00
diff --git a/templating/twig_extension.rst b/templating/twig_extension.rst
@@ -72,6 +72,8 @@ you're done! Symfony will automatically know about your new service and add the
 
 You can now start using your filter in any Twig template.
 
+.. _lazy-loaded-twig-extensions:
+
 Creating Lazy-Loaded Twig Extensions
 ------------------------------------
 
