Update Jekyll plugins list.

_config.yml

@@ -6,6 +6,20 @@ remote_theme: just-the-docs/just-the-docs
 baseurl: ""
 url: "https://tt-rss.org"
 
+# based upon what the github-pages gem included
+plugins:
+- jekyll-coffeescript
+- jekyll-commonmark-ghpages
+- jekyll-gist
+- jekyll-github-metadata
+- jekyll-paginate
+- jekyll-relative-links
+- jekyll-optional-front-matter
+- jekyll-readme-index
+- jekyll-default-layout
+- jekyll-titles-from-headings
+- jekyll-remote-theme
+
 # Just the Docs theme settings
 color_scheme: light
 search_enabled: true