docs: update 11-caching.mdx

Author: twlite

apps/website/docs/guide/11-caching.mdx

@@ -19,7 +19,7 @@ By default, commandkit enables in-memory caching. This means that the cache will
 You can provide a custom cache store by specifying the `cacheProvider` option when instantiating CommandKit.
 
 ```js
-const { CommandKit } = require('commandkit');
+import { CommandKit } from 'commandkit';
 
 new CommandKit({
   client,