change version of paginate

Gemfile

@@ -21,7 +21,7 @@ gem 'jekyll-theme-lcsb-default', '~> 0.3.2'
 # If you have any plugins, put them here!
 group :jekyll_plugins do
  gem "jekyll-paginate-v2",
-     "~> 2",
+     "~> 3",
      :git => "https://github.com/sverrirs/jekyll-paginate-v2.git"
 
  gem "jekyll-feed",