ds000201 -- missing , after a name in dataset_description.json

[yarikoptic]

thought it was again utf8 stricking back but it is just a banal missing comma (after Peter's name). since @vsoch liked my screen shots so much, here it is:

[vsoch]

+1! 🍔

Yes, simple validation of the files should take care of this - we do something similar for experiment factory, the validation function first tries loading the json file, and returns invalid if it doesn't work. It's surprised me how often and easy it is to forget commas, quotes, and the like.

[yarikoptic]

I think this one is fixed but caused #9 ;)