chore: remove comma

Author: sofisl

samples/package.json

@@ -22,7 +22,7 @@
     "googleapis-common": "^8.0.2-rc.0",
     "nconf": "^0.13.0",
     "open": "^8.0.0",
-    "server-destroy": "^1.0.1",
+    "server-destroy": "^1.0.1"
   },
   "devDependencies": {
     "chai": "^4.2.0",