fead: add Fabricator API reference

Signed-off-by: Pau Capdevila <[email protected]>

Author: pau-hedgehog

docs/install-upgrade/config.md

@@ -31,6 +31,8 @@ After the above workflow a user will have a .img file suitable for installing th
 
 ## Complete Example File
 
+The following example outlines a comprehensive Fabricator configuration. You can find further configuration details in the Fabricator [API Reference](../reference/fab-api.md).
+
 ``` { .yaml .annotate title="fab.yaml" linenums="1"} 
 apiVersion: fabricator.githedgehog.com/v1beta1
 kind: Fabricator