Change opencollective to contributors-img

[FantasqueX]

Details are described in #481

[github-actions]

📝 Docs preview for commit fc0d42e at: https://608119d8a823d67771ce7ed7--modest-austin-48be4a.netlify.app

[iromise]

@FantasqueX I haven't taken a close look at the contributors-img. Is there some big difference between opencollective and contributors-img?

[FantasqueX]

@FantasqueX I haven't taken a close look at the contributors-img. Is there some big difference between opencollective and contributors-img?

Since I don't have a repository with more than 100 stars, I can't use open collective. But from my observation of issues of open collective opencollective/opencollective-api#1164 and README.md of oi-wiki, the images generated by opencollective are outdated. And I can't find the sync frequency from the doc.

As for contributors-img explains caveats in the author's blog:

• A repo having too many contributors takes a long time to generate an image.
• For each repository, images are generated once in a day and it will be cached for later requests.

Here is an example of the author's repo https://github.com/angular/angular-ja , it works well.

I think the differences are as follows:

1. Sync frequency.
2. Open collective offers a lot of parameters while contributos-img doesn't.
3. Contributer-img provides larger width for each individual avatar.

[iromise]

@FantasqueX It seems good, but I find that the figure generated is not beautiful as well as opencollective. Besides, it is too large.

[FantasqueX]

@iromise Surely, that's quite a problem :(