Update The Rails Initialization Process of guide [ci skip]

guides/source/initialization.md

@@ -99,13 +99,15 @@ configure the load path for your Gemfile's dependencies.
 
 A standard Rails application depends on several gems, specifically:
 
+* actioncable
 * actionmailer
 * actionpack
 * actionview
+* activejob
 * activemodel
 * activerecord
+* activestorage
 * activesupport
-* activejob
 * arel
 * builder
 * bundler
@@ -131,7 +133,7 @@ Once `config/boot.rb` has finished, the next file that is required is
 `ARGV` array simply contains `server` which will be passed over:
 
 ```ruby
-require "rails/command"
+require_relative "command"
 
 aliases = {
   "g"  => "generate",
@@ -170,7 +172,7 @@ module Rails::Command
       namespace = namespace.to_s
       namespace = "help" if namespace.blank? || HELP_MAPPINGS.include?(namespace)
       namespace = "version" if %w( -v --version ).include? namespace
-    
+
       if command = find_by_namespace(namespace)
         command.perform(namespace, args, config)
       else
@@ -189,7 +191,7 @@ module Rails
     class ServerCommand < Base # :nodoc:
       def perform
         set_application_directory!
-  
+
         Rails::Server.new.tap do |server|
           # Require application after server sets environment to propagate
           # the --environment option.
@@ -311,7 +313,7 @@ def parse!(args)
   args, options = args.dup, {}
 
   option_parser(options).parse! args
-  
+
   options[:log_stdout] = options[:daemonize].blank? && (options[:environment] || Rails.env) == "development"
   options[:server]     = args.shift
   options
@@ -366,11 +368,11 @@ private
 
   def log_to_stdout
     wrapped_app # touch the app so the logger is set up
-  
+
     console = ActiveSupport::Logger.new(STDOUT)
     console.formatter = Rails.logger.formatter
     console.level = Rails.logger.level
-  
+
     unless ActiveSupport::Logger.logger_outputs_to?(Rails.logger, STDOUT)
       Rails.logger.extend(ActiveSupport::Logger.broadcast(console))
     end
@@ -537,6 +539,7 @@ require "rails"
   action_mailer/railtie
   active_job/railtie
   action_cable/engine
+  active_storage/engine
   rails/test_unit/railtie
   sprockets/railtie
 ).each do |railtie|