Update pep-0788.rst

Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>

Author: ZeroIntensity

peps/pep-0788.rst

@@ -83,7 +83,7 @@ code in their stream of calls (for example, C++ executing finalizers in
 ``Py_IsFinalizing`` is insufficient
 ***********************************
 
-The `docs <https://docs.python.org/3/c-api/init.html#c.PyGILState_Ensure>`_
+The :c:func:`docs <PyGILState_Ensure>`
 currently recommend :c:func:`Py_IsFinalizing` to guard against termination of
 the thread: