config.json in trackler-2.1.0.42

- old
+ new

@@ -1,8 +1,8 @@
 {
   "slug": "c",
   "language": "C",
-  "repository": "https://github.com/exercism/xc",
+  "repository": "https://github.com/exercism/c",
   "checklist_issue": 8,
   "active": false,
   "exercises": [
     {
       "slug": "hello-world",