added missing comma

templates/create_vre_folder_for_context.json.j2

@@ -12,7 +12,7 @@
         "base_url": "https://url.gcube.d4science.org/",
 	"keycloak": "{{ keycloak }}/{{ keycloak_realm }}",
 	"keycloak_admin" : "{{ keycloak_admin }}/{{ keycloak_realm }}",
-        "storagehub" : "{{ storagehub }}"
+        "storagehub" : "{{ storagehub }}",
         "ctx": "${workflow.input.context}",
         "scriptExpression": "function e(v){ return (v == null || (v.trim && v.trim() === ''))} if(e($.ctx)) throw('Context must not be empty'); return { decoded_context : $.ctx.replaceAll('%2F', '/') }"
       },