ISSLocation: Fix file names and style

Hi @rishiag 

Thanks for starting on this instant answer, I think it's a great idea :smile: 

I've fixed the issue you're having. You had the IA directories named incorrectly and also your Spice function `ddg_spice_iss_location` 

Next time you create a new instant answer try using the `duckpan new` command as this will create the files and directory structure for you :+1: 

There's still a few things that this Spice needs before it's ready. So you can get some more community feedback I would suggest creating a new pull request *(once this one is merged)*.  Please ensure you fill out the [pull request template](https://github.com/duckduckgo/zeroclickinfo-spice/blob/master/pull_request_template_spice.md).

Thanks again,
Chris