Update code.mdx

Author: mintlify[bot]

code.mdx

@@ -59,6 +59,8 @@ Enable syntax highlighting by specifying the programming language after the open
 
 We use [Shiki](https://shiki.style/) for syntax highlighting and support all available languages. See the full list of [languages](https://shiki.style/languages) in Shiki's documentation.
 
+You can customize the appearance of code blocks globally using the `styling.codeblocks` configuration in your `docs.json` file. See [Settings](/settings#codeblocks) for more details on theme customization.
+
 ```java
 class HelloWorld {
     public static void main(String[] args) {