Fix broken links

[basplijnaer]

Problem

Building the Docusaurus webpage currently gives the following warning:

Warning:  Docusaurus found broken links!

Please check the pages of your site in the list below, and make sure you don't reference any path that does not exist.
Note: it's possible to ignore broken links with the 'onBrokenLinks' Docusaurus configuration, and let the build pass.

Exhaustive list of all broken links found:

- On source page path = /DocuGen/docs/Ampersand/the-language-ampersand/patterns:
   -> linking to broken-reference (resolved as: /DocuGen/docs/Ampersand/the-language-ampersand/broken-reference)

This concerns the following file: patterns.md

Tasks

Either:

• [ ] Remove the broken links or
• [ ] Redirect the the broken links to an existing page

After the links have been fixed:

• [ ] Change the ci/cd so that broken links will let the build fail as well.