Fix references to third-party checkbox name

spec/features/admin/admin_settings_spec.rb

@@ -275,7 +275,7 @@ RSpec.describe 'Admin updates settings' do
 
       it 'enable hiding third party offers' do
         page.within('.as-third-party-offers') do
-          check 'Do not display offers from third parties within GitLab'
+          check 'Do not display offers from third parties'
           click_button 'Save changes'
         end
 

spec/features/projects/clusters/gcp_spec.rb

@@ -214,7 +214,7 @@ RSpec.describe 'Gcp Cluster', :js do
     it 'user does not see the offer' do
       page.within('.as-third-party-offers') do
         click_button 'Expand'
-        check 'Do not display offers from third parties within GitLab'
+        check 'Do not display offers from third parties'
         click_button 'Save changes'
       end