Fix rubocop offenses

Author: Nicholas Palaniuk

lib/omdb/api/request.rb

@@ -33,7 +33,7 @@ def perform
  year: 'y',
  return: 'r',
  version: 'v'
- }
+ }.freeze
 
  def _set_params(params)
  {}.tap do |p|

lib/omdb/api/types/movies.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module Omdb
  module Api
  module Types

lib/omdb/api/utils.rb

@@ -25,7 +25,7 @@ def _response_handler(klass)
  def _handle_response(resp, klass)
  resp.deep_transform_keys! { |k| k.underscore.to_sym }
 
- resp.fetch(:response) == 'True' ?  klass.new(resp) : Omdb::Api::Types::Error.new(resp)
+ resp.fetch(:response) == 'True' ? klass.new(resp) : Omdb::Api::Types::Error.new(resp)
  end
  end
  end