Change test to check for badge instead of label

spec/lib/banzai/filter/label_reference_filter_spec.rb

@@ -59,7 +59,7 @@ describe Banzai::Filter::LabelReferenceFilter do
   describe 'label span element' do
     it 'includes default classes' do
       doc = reference_filter("Label #{reference}")
-      expect(doc.css('a span').first.attr('class')).to eq 'label color-label has-tooltip'
+      expect(doc.css('a span').first.attr('class')).to eq 'badge color-label has-tooltip'
     end
 
     it 'includes a style attribute' do