RSA Fingerprint Page SSL Problem

My firefox reports a problem with the SSL cert for https://confluence.atlassian.com/bitbucket/use-the-ssh-protocol-with-bitbucket-221449711.html . Since this seems to be the way to verify the bitbucket RSA key, it would be nice to be able to trust it! Also, since users may have no idea the relationship between confluence.atlassian.com and bitbucket, it would be great to have this info under bitbucket.org

Thanks.