Add back semicolons to the HTTP server example in about page

locale/en/about/index.md

@@ -11,20 +11,20 @@ connections can be handled concurrently. Upon each connection the callback is
 fired, but if there is no work to be done Node is sleeping.
 
 ```javascript
-const http = require('http')
+const http = require('http');
 
-const hostname = '127.0.0.1'
-const port = 3000
+const hostname = '127.0.0.1';
+const port = 3000;
 
 const server = http.createServer((req, res) => {
-  res.statusCode = 200
-  res.setHeader('Content-Type', 'text/plain')
-  res.end('Hello World\n')
+  res.statusCode = 200;
+  res.setHeader('Content-Type', 'text/plain');
+  res.end('Hello World\n');
 })
 
 server.listen(port, hostname, () => {
-  console.log(`Server running at http://${hostname}:${port}/`)
-})
+  console.log(`Server running at http://${hostname}:${port}/`);
+});
 ```
 
 This is in contrast to today's more common concurrency model where OS threads