[WIP] Corrections

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | no
| Applies to    | all (or 2.3+)
| Fixed tickets |

There are a few things missing from this documentation and also I think it would be better to not create an RSS block as an example, but rather create something simpler without dependencies.

This is a WIP.