Doc: Fix allocator mismatch in PyStatus example (GH-160757)

(cherry picked from commit 495fef1)

Co-authored-by: Inada Naoki <songofacandy@gmail.com>

Author: miss-islington

Doc/c-api/init_config.rst

@@ -831,7 +831,7 @@ Example::
         if (PyStatus_Exception(status)) {
             Py_ExitStatusException(status);
         }
-        PyMem_Free(ptr);
+        PyMem_RawFree(ptr);
         return 0;
     }