[experiments][serializers] Fix description related getters

beat/web/experiments/serializers.py

@@ -275,13 +275,13 @@ class ExperimentResultsSerializer(ShareableSerializer):
         return serializer.data
 
     def get_html_description(self, obj):
-        d = obj.description.decode('utf-8')
+        d = obj.description
         if len(d) > 0:
             return restructuredtext(d)
         return ''
 
     def get_description(self, obj):
-        return obj.description.decode('utf-8')
+        return obj.description
 
     def get_display_start_date(self, obj):
         if obj.start_date is None: