Merge pull request #2381 from NCCE/3022-update-course-code-on-seed

Updating course code

Author: msquance-stem

db/seeds/activities/mylearning.rb

@@ -828,7 +828,7 @@
   activity.category = "online"
   activity.self_certifiable = false
   activity.provider = "stem-learning"
-  activity.stem_activity_code = "CO512"
+  activity.stem_activity_code = "CO502"
   activity.always_on = true
 
   activity.programmes = [secondary_certificate]