Documentation: provide rendered examples for samples

[jaskij]

As is, I can infer what hide_empty_section=true does, but I have to test what enhanced_rendering=true does myself. It would be great if there were screenshots or PDFs of rendered documents besides the samples to be able to quickly check them myself.

[Alwinator]

enhanced_rendering allows to have e.g. links in the titles of the images and tables.