Fix the fixin' fix

docs/reference/basic-config.md

@@ -7,7 +7,9 @@ mapped_pages:
 
 This page shows you the possible basic configuration options that the clients offers.
 
-<pre><code class="language-js hljs language-javascript">
+```js
+```
+
 const { Client } = require('@elastic/elasticsearch')
 
 const client = new Client({
@@ -16,6 +18,7 @@ const client = new Client({
   maxRetries: 5,
   sniffOnStart: true
 })
+
 ```
 
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