FixInsight: updated documentation / PDF manual

The linked PDF manual in the resources section still is the one from February 2020, that's going to be 4 years old soon.

In the meanwhile some additional oddity patterns have been added to the detection range but there is no brief description of them in the manual, as it was done previously. For instance W537 and W538 are missing. Also the new exposed settings in the added About dialog and the new Results dialog window could be mentioned (more importantly the first as a mention in the changelog is really hidden and honestly lazy).

As this component is one of your still sold products, I think we can request an updated manual for it.