Update peps/pep-0733.rst

peps/pep-0733.rst

@@ -189,7 +189,7 @@ Examples are
 `HPy <https://hpyproject.org>`__ and
 `pythoncapi-compat <https://pythoncapi-compat.readthedocs.io/en/latest/>`__.
 CPython's DSL for parsing function arguments, the
-`Argument Clinic <https://docs.python.org/3/howto/clinic.html>`__,
+`Argument Clinic <https://devguide.python.org/development-tools/clinic/>`__,
 can also be seen as belonging to this category of stakeholders.
 
 Such systems need minimal building blocks for accessing CPython