I noticed that in the relativedelta examples there is a link using the wrong syntax for RST, so it's not getting turned into a link.

The issue is this line, which currently reads:

[http://www.cl.cam.ac.uk/~mgk25/iso-time.html ISO year week number notation]

But should read:

ISO year week number notation

It needs to be turned into RST syntax, which is I think:

`ISO year week number notation <http://www.cl.cam.ac.uk/~mgk25/iso-time.html>`_