Fix nokogiri errors

lib/awesome_print/formatters/ext/nokogiri_document_formatter.rb

@@ -0,0 +1,30 @@
+require_relative '../base_formatter'
+
+module AwesomePrint
+  module Formatters
+    class NokogiriDocumentFormatter < BaseFormatter
+
+      formatter_for :nokogiri_xml_document
+
+      def self.formattable?(object)
+        defined?(::Nokogiri) && object.is_a?(::Nokogiri::XML::Document)
+      end
+
+      def format(object)
+
+        xml = object.to_xml(indent: 2)
+        #
+        # Colorize tag, id/class name, and contents.
+        #
+        xml.gsub!(/(<)(\/?[A-Za-z1-9]+)/) { |tag| "#{$1}#{colorize($2, :keyword)}" }
+        xml.gsub!(/(id|class)="[^"]+"/i) { |id| colorize(id, :class) }
+        xml.gsub!(/>([^<]+)</) do |contents|
+          contents = colorize($1, :trueclass) if contents && !contents.empty?
+          ">#{contents}<"
+        end
+        xml
+      end
+
+    end
+  end
+end

lib/awesome_print/formatters/ext/nokogiri_nodeset_formatter.rb

@@ -2,7 +2,7 @@ require_relative '../base_formatter'
 
 module AwesomePrint
   module Formatters
-    class NokogiriNodeFormatter < BaseFormatter
+    class NokogiriNodesetFormatter < BaseFormatter
 
       formatter_for :nokogiri_xml_nodeset