Suggestion to the Soup-to-nuts wiki example

[ChristinaLK]

I have two suggestions for the soup-to-nuts wiki page. I'd a submit a PR but I don't think it's possible to do so to a wiki page.

There's a small typo in the "fvecVcf" example command, where a missing return after the \ character reads as a faulty argument instead of the continuation of a line.

I also changed one of the references to /scratch/ak917/ to be more generic.

Proposed change is in: https://github.com/ChristinaLK/diploshic-wiki/blob/master/A-soup-to-nuts-example.md