chore(nyc): fix format of nyc configs

Author: gustavohenke

package.json

@@ -25,8 +25,13 @@
     "typings": "^1.3.3"
   },
   "nyc": {
-    "extension": [ ".ts" ],
-    "reporter": [ "lcov", "text-summary" ],
+    "extension": [
+      ".ts"
+    ],
+    "reporter": [
+      "lcov",
+      "text-summary"
+    ],
     "report-dir": "test/coverage"
   }
 }