rails: fix clean_html_guide

lib/docs/filters/rails/clean_html_guides.rb

@@ -23,9 +23,10 @@ module Docs
         end
 
         css('pre').each do |node|
-          language = node['class'][/brush: ?(\w+)/, 1]
+          code = node.at_css('code')
+          language = code['class'][/highlight ?(\w+)/, 1]
           node['data-language'] = language unless language == 'plain'
-          node.remove_attribute('class')
+          code.remove_attribute('class')
           node.content = node.content.strip
         end
 

lib/docs/scrapers/rdoc/rails.rb

@@ -84,7 +84,7 @@ module Docs
     end
 
     version '6.1' do
-      self.release = '6.1.0'
+      self.release = '6.1.1'
     end
 
     version '6.0' do