Update oembed.js

Author: benhatsor

api/oembed.js

@@ -3,7 +3,7 @@ export default function handler(request, response) {
 
   const query = request.query;
 
-  const isJSON = query.format ? query.format === 'json' : false;
+  const isJSON = query.format ? query.format.toLowerCase() === 'json' : false;
 
 
   let resp;