update

Author: zhiyuanliang-ms

articles/azure-app-configuration/howto-targetingfilter-javascript.md

@@ -137,7 +137,7 @@ We will use ambient targeting context as an example in this tutorial.
     ```js
     const express = require("express");
     const server = express();
-    const port = 8080
+    const port = 8080;
 
     const { AsyncLocalStorage } = require("async_hooks");
     const requestAccessor = new AsyncLocalStorage();