Fix to_not to not_to on rspec expectations

spec/features/admin/budgets_spec.rb

@@ -279,7 +279,7 @@ feature 'Admin budgets' do
         click_link 'Delete'
       end
 
-      expect(page).to_not have_content 'District 1'
+      expect(page).not_to have_content 'District 1'
     end
 
   end

spec/features/valuation/budgets_spec.rb

@@ -30,8 +30,8 @@ feature 'Valuation budgets' do
 
       visit valuation_budgets_path
 
-      expect(page).to_not have_content(budget1.name)
-      expect(page).to_not have_content(budget2.name)
+      expect(page).not_to have_content(budget1.name)
+      expect(page).not_to have_content(budget2.name)
       expect(page).to have_content(budget3.name)
     end