Fix lots of broken links in the docs, found by Sphinx' external link checker.
diff --git a/Doc/library/robotparser.rst b/Doc/library/robotparser.rst
index 2451799..6cc7df8 100644
--- a/Doc/library/robotparser.rst
+++ b/Doc/library/robotparser.rst
@@ -15,9 +15,8 @@
This module provides a single class, :class:`RobotFileParser`, which answers
questions about whether or not a particular user agent can fetch a URL on the
-Web site that published the :file:`robots.txt` file. For more details on the
-structure of :file:`robots.txt` files, see
-http://www.robotstxt.org/wc/norobots.html.
+Web site that published the :file:`robots.txt` file. For more details on the
+structure of :file:`robots.txt` files, see http://www.robotstxt.org/orig.html.
.. class:: RobotFileParser()