Update webpack documentation (2.5.1)

lib/docs/filters/webpack/clean_html.rb

@@ -17,7 +17,7 @@ module Docs
 
         css('hr', '.page__edit', 'hr + h3:contains("Contributors")', 'hr + h2:contains("Contributors")',
             '.contributors', '.icon-link', '#maintainers.header', '#maintainers.header + table',
-            '#maintainer.header', '#maintainer.header + table').remove
+            '#maintainer.header', '#maintainer.header + table', '.page-links__link', '.page-links__gap').remove
 
         css('> div', '.tip-content', '.header span').each do |node|
           node.before(node.children).remove

lib/docs/scrapers/webpack.rb

@@ -4,7 +4,7 @@ module Docs
     self.type = 'webpack'
 
     version '2' do
-      self.release = '2.3.3'
+      self.release = '2.5.1'
       self.base_url = 'https://webpack.js.org/'
       self.root_path = 'guides/get-started/'
       self.initial_paths = %w(