📋 Description

For historic reasons, we have a handful of badges that use the same 'path' in the Open API specs:

https://github.com/search?q=repo%3Abadges%2Fshields+path%3A%2F%5Eservices%5C%2Fgithub%5C%2F%2F+github%2F%7Bvariant%7D%2F%7Buser%7D%2F%7Brepo%7D&type=code

This is mostly fine, except we use path as the key in an object here:

This means if we have 2 services in the same category where the path is /github/{variant}/{user}/{repo} one overwrites the other and only one shows up in the docs.

Because both
https://github.com/badges/shields/blob/master/services/github/github-contributors.service.js
and
https://github.com/badges/shields/blob/master/services/github/github-release-date.service.js
are in the activity category, only one of them shows up in the docs.

I need to find a way round this. Probably make it an array instead of object.

While we are sorting this out, we should also document the difference between the contributors and contributors-anon variants.