Add information about html proofer

fsalvi · fsalvi · commit 3bd9016466cb · 2023-02-23T17:17:29.000+01:00
diff --git a/Gemfile b/Gemfile
@@ -1,4 +1,6 @@
 source 'https://rubygems.org'
 gem 'github-pages'
 gem 'webrick'
+#
 gem 'html-proofer'
+# gem 'html-proofer' # link-checking:  bundle exec htmlproofer ./_site/ --only-4xx --ignore-empty-alt=true --allow-hash-href=true
