docs: Update documentation

Gemfile

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+source "https://rubygems.org"
+
+gem "github-pages", group: :jekyll_plugins
+gem "jekyll-theme-minimal"
+gem "jekyll-relative-links"
+gem "jekyll-seo-tag"
+gem "jekyll-remote-theme"
+gem "jekyll-github-metadata"
+gem "faraday-retry"
+
+# Windows and JRuby does not include zoneinfo files, so bundle the tzinfo-data gem
+# and associated library.
+platforms :mingw, :x64_mingw, :mswin, :jruby do
+  gem "tzinfo", ">= 1"
+  gem "tzinfo-data"
+end
+
+# Lock `http_parser.rb` gem to `v0.6.x` on JRuby builds since newer versions of the gem
+# do not have a Java counterpart.
+gem "http_parser.rb", "~> 0.6.0", :platforms => [:jruby]
+
+# Add webrick for Ruby 3.0+
+gem "webrick", "~> 1.7"