[Flex Cloud SQL] Tweak syntax to make more clear in doc snippet

Author: remi Taylor

appengine/cloudsql/app.rb

@@ -30,7 +30,7 @@
   DB[:visits].insert user_ip: visitor_ip, timestamp: Time.now
 
   # Retrieve the latest 10 visit records from the database
-  visits = DB[:visits].order(Sequel.desc(:timestamp)).limit(10)
+  visits = DB[:visits].limit(10).order Sequel.desc(:timestamp)
 
   response.write "Last 10 visits:\n"