Using CommonMark GHPages Markdown Processor

Using GH-flavoured CommonMark instead of kramdown

In the Gemfile:

gem "jekyll-commonmark-ghpages"

In the _config.yml file:

markdown: CommonMarkGhPages

commonmark:
  options: ["SMART", "FOOTNOTES"]
  extensions: ["strikethrough", "autolink", "table"]

plugins:
  - jekyll-commonmark-ghpages

Autolink is key — means you can just past addresses and they’ll be linked automatically.