Update next.config.js (vercel#2511)

Author: ForsakenHarmony

examples/using-preact/next.config.js

@@ -1,7 +1,7 @@
 module.exports = {
   webpack: function (config, { dev }) {
     // For the development version, we'll use React.
-    // Because, it support react hot loading and so on.
+    // Because, it supports react hot loading and so on.
     if (dev) {
       return config
     }