Stopped camel casing the project code

Why on Earth did I camel case that one and no others?

shared/workspaces/alembic/versions/491102d56809_add_ingest_obs_workflow.py

@@ -49,7 +49,7 @@ metadata_json = """{
   "data_location": "{{data_src}}",
   "projectMetadata": {
     "telescope": "{{telescope}}",
-    "projectCode": "{{projectCode}}"
+    "project_code": "{{project_code}}"
   }
 }