[Training] Improve resources page usability when we have a resource with more than one download option
Some of our training resources have or will have more than one download option. For example, "All About Tor" will be available in 3 formats:
- Web: like this https://community.torproject.org/training/resources/tor-relay-workshop/
- ODP: https://gitweb.torproject.org/community/training.git/plain/2021/all-about-tor/all-about-tor-full-pack.odp
- PDF: https://gitweb.torproject.org/community/training.git/plain/2021/all-about-tor/all-about-tor-full-pack.pdf
In these cases, I was thinking we could have different icons instead of "Check this resource" button.