add note

Author: valeriupredoi

Gemfile

@@ -8,7 +8,8 @@ git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }
 ruby '>=2.5.3'
 
 #  github-pages conflics with jekyll+liquid, but the site
-#  builds well locally
+#  builds well locally; github-pages gem is semi-deprecated
+#  and should not be used as gem anymore, instead use via Actions
 #  gem 'github-pages', group: :jekyll_plugins
 gem 'jekyll', '~> 4.3'
 gem 'csv'