Update supported languages for syntax highlighting (#778)

* document switch from Prism to Shiki

* specify supported languages

Author: ethanpalm

code.mdx

@@ -60,7 +60,29 @@ class HelloWorld {
 ```
 ````
 
-We use [Shiki](https://shiki.style/guide) for syntax highlighting and support all available [languages](https://shiki.style/languages).
+We use [Shiki](https://shiki.style/guide) for syntax highlighting and support these languages:
+
+* Bash
+* Blade
+* C
+* C++
+* C#
+* Dart
+* Go
+* Java
+* JavaScript
+* JSON
+* JSX
+* Kotlin
+* Log
+* Markdown
+* PHP
+* Python
+* Ruby
+* Swift
+* TypeScript
+* TSX
+* YAML
 
 ## Names