Revert the *spec* note removal

Author: encukou

peps/pep-0793.rst

@@ -349,7 +349,8 @@ They may not have a ``NULL`` value (instead, the slot can be omitted entirely).
 Note that currently, for modules created from a *spec* (that is, using
 ``PyModule_FromDefAndSpec``), the ``PyModuleDef.m_name`` member is ignored
 and the name from the spec is used instead.
-All API proposed in this document will ignore ``Py_mod_name`` in the same way.
+All API proposed in this document creates modules from a *spec*, and it will
+ignore ``Py_mod_name`` in the same way.
 The slot will be optional, but extension authors are strongly encouraged to
 include it for the benefit of future APIs, external tooling, debugging,
 and introspection.