docs(deps): update shiki-transformer-color-highlight

docs/app/mdc.config.ts

@@ -1,10 +1,10 @@
 import { defineConfig } from '@nuxtjs/mdc/config'
-// import { transformerColorHighlight } from 'shiki-transformer-color-highlight'
+import { transformerColorHighlight } from 'shiki-transformer-color-highlight'
 
 export default defineConfig({
   shiki: {
     transformers: [
-      // transformerColorHighlight()
+      transformerColorHighlight()
     ]
   }
 })