Fix another Stubhub HTTP URL

spec/data_fixtures/stubhub_data.json

@@ -2,7 +2,7 @@
   "response":{
     "docs":[
       {
-      "url": "http://www.stubhub.com/event/name-1-1-2014-12345",
+      "url": "https://www.stubhub.com/event/name-1-1-2014-12345",
       "seo_description_en_US": "name",
       "event_date_local": "2014-01-01",
       "maxPrice": "100",