Convert external links to internal links. Fixes #2010.
diff --git a/Doc/howto/unicode.rst b/Doc/howto/unicode.rst
index 16bd5a8..fb84df7 100644
--- a/Doc/howto/unicode.rst
+++ b/Doc/howto/unicode.rst
@@ -277,7 +277,7 @@
Encodings are specified as strings containing the encoding's name. Python 2.4
comes with roughly 100 different encodings; see the Python Library Reference at
-<http://docs.python.org/lib/standard-encodings.html> for a list. Some encodings
+:ref:`standard-encodings` for a list. Some encodings
have multiple names; for example, 'latin-1', 'iso_8859_1' and '8859' are all
synonyms for the same encoding.