Reformat two-fer in config

Smarticles101 · Smarticles101 · commit 8ea73c2cc91e · 2017-06-24T17:31:28.000-05:00
diff --git a/config.json b/config.json
@@ -14,7 +14,9 @@
     {
       "slug": "two-fer",
       "difficulty": 1,
-      "topics": []
+      "topics": [
+
+      ]
     },
     {
       "slug": "rna-transcription",
