Add more info to Contribute section

[lenicatko]

Added purpose of different comms channels, link to contributing.md, added link to additional resources from Awesome CRI-O.

none

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: lenicatko
Once this PR has been reviewed and has the lgtm label, please assign haircommander for approval by writing /assign @haircommander in a comment. For more information see the Kubernetes Code Review Process.

The full list of commands accepted by this bot can be found here.

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[TomSweeneyRedHat]

Making this change caused the table to highlight every other row. That's fine, but the backticks also do that too, and you end up with a double highlight, that IMO looks a bit wonky. I'd vote to use one of these changes, the backticks of the OS names, or this change, but not both.

[lenicatko]

When I opened it with ./script/server, the formatting was the same as before after this change, so I was not aware of this issue with highlighting every other row. I can return it back, as I agree, double highlighting would look strange, I am just confused why I can't see this when opening it locally.

[lenicatko]

I didn't notice, I will rebase.