Autofix Rubocop RSpec/ClassCheck (#23685)

spec/lib/settings/extend_spec.rb

@@ -10,7 +10,7 @@ RSpec.describe Settings::Extend do
   describe '#settings' do
     it 'sets @settings as an instance of Settings::ScopedSettings' do
       user = Fabricate(:user)
-      expect(user.settings).to be_kind_of Settings::ScopedSettings
+      expect(user.settings).to be_a Settings::ScopedSettings
     end
   end
 end