Variant Calling testing cmds should match script

[sstevens2]

How could the content be improved?

Right now they run the variant calling pipeline from the dc_workshop folder and then in the script they run it from the results folder. I think we should have these two locations match, aka update one or the other so you can copy the comands from the history or as they run them and not have to adjust the paths for everything.

I also think we should move scripting earlier as I noted in issue #174, which would make it even more vital that they match. However, regardless of if we move the scripting earlier, this change should be considered.

Thanks for considering!