Upgrade rubocop-github gem to 0.16.0

github-pages.gemspec

@@ -30,5 +30,5 @@ Gem::Specification.new do |s|
   s.add_development_dependency("jekyll_test_plugin_malicious", "~> 0.2")
   s.add_development_dependency("pry", "~> 0.10")
   s.add_development_dependency("rspec", "~> 3.3")
-  s.add_development_dependency("rubocop-github", "0.14.0")
+  s.add_development_dependency("rubocop-github", "0.16.0")
 end