#5130: replace "unicode" by "bytes" in examples for sequence types.

Doc/glossary.rst

@@ -484,7 +484,7 @@ Glossary
       indices via the :meth:`__getitem__` special method and defines a
       :meth:`len` method that returns the length of the sequence.
       Some built-in sequence types are :class:`list`, :class:`str`,
-      :class:`tuple`, and :class:`unicode`. Note that :class:`dict` also
+      :class:`tuple`, and :class:`bytes`. Note that :class:`dict` also
       supports :meth:`__getitem__` and :meth:`__len__`, but is considered a
       mapping rather than a sequence because the lookups use arbitrary
       :term:`immutable` keys rather than integers.