Update config.py

I also changed the word envirornment to environment!
we don't support rsync or ftp, we only support 'http' or 'https' values. this value is for the ping check, and only works for http or https, sorry for any confusion.

also, can you remove the protocols from the domains, with no trailing slash on the url.

```
http://pypi.mirrors-uk.go-parts.com/ -> pypi.mirrors-uk.go-parts.com
```