@tvlooy there is no reference pointer to that section aswell.

When you do something like:
````rst
:ref:`the-web-directory`
````
Sphinx will look at the current page to find a section name which matches that name, then it will look at the hole documentation to find a reference pointer:
````rst
.. _the-web-directory:
````
If he find one, that will become the link.

If this pointer is above a section title, it will take that title as the link name at default. Otherwise, you need to set a link name.
````rst
.. _the-web-directory:

The Web Directory
~~~~~~~~~~~~~~~~~
````