Revert part of #145

Fix the releases table no longer being populated

Author: n0samu

_config.yml

@@ -6,7 +6,6 @@ image: "/assets/logo.svg"
 baseurl: ""
 url: "https://ruffle.rs"
 # twitter_username: jekyllrb
-github: [metadata]
 github_username: ruffle-rs
 github_url: "https://github.com/ruffle-rs/ruffle"
 repository: ruffle-rs/ruffle