php.net callback documentation link changed

Author: fzsys

create_framework/templating.rst

@@ -178,5 +178,5 @@ As always, you can decide to stop here and use the framework as is; it's
 probably all you need to create simple websites like those fancy one-page
 `websites`_ and hopefully a few others.
 
-.. _`callbacks`: https://www.php.net/callback#language.types.callback
+.. _`callbacks`: https://www.php.net/manual/en/language.types.callable.php
 .. _`websites`: https://kottke.org/08/02/single-serving-sites