fix linting errors

app/models/invoice/data_presenter/adjustable.rb

@@ -2,20 +2,19 @@
 
 class Invoice
   class DataPresenter
-    class Adjustable  < Invoice::DataPresenter::Base
+    class Adjustable < Invoice::DataPresenter::Base
       attributes :id, :type, :currency, :included_tax_total, :additional_tax_total, :amount
 
       def display_taxes(display_zero: false)
         if included_tax_total.positive?
-          amount = Spree::Money.new(included_tax_total, currency: currency)
-          I18n.t(:tax_amount_included, amount: amount)
+          amount = Spree::Money.new(included_tax_total, currency:)
+          I18n.t(:tax_amount_included, amount:)
         elsif additional_tax_total.positive?
-          Spree::Money.new(additional_tax_total, currency: currency)
+          Spree::Money.new(additional_tax_total, currency:)
         elsif display_zero
-          Spree::Money.new(0.00, currency: currency)
+          Spree::Money.new(0.00, currency:)
         end
       end
-
     end
   end
-end
+end

app/models/invoice/data_presenter_attributes.rb

@@ -20,7 +20,7 @@ class Invoice
 
           instance_variable_set("@#{attribute}",
                                 Invoice::DataPresenter.const_get(
-                                  class_name.present? ? class_name : attribute.to_s.classify
+                                  class_name.presence || attribute.to_s.classify
                                 ).new(data&.[](attribute)))
         end
       end

spec/system/admin/invoice_print_spec.rb

@@ -122,7 +122,6 @@ describe '
         expect(page).to have_content 'description2'
       end
     end
-
   end
   shared_examples "Check display on each invoice: legacy and alternative" do |alternative_invoice|
     let!(:completed_order) do