docs: fix plugin usage warning block

docs/plugin.md

@@ -9,7 +9,8 @@ The plugin provides your application the active session and user context to Cler
 ## Usage
 
 ::: warning
-When using Nuxt, ensure that your plugin filenames are suffixed with `.client.js` or `.client.ts`. This practice ensures that Nuxt will load them only when Vue is mounted and ready on the client, preventing them from being loaded on the server side.:::
+When using Nuxt, ensure that your plugin filenames are suffixed with `.client.js` or `.client.ts`. This practice ensures that Nuxt will load them only when Vue is mounted and ready on the client, preventing them from being loaded on the server side.
+:::
 
 ```ts
 import { createApp } from 'vue'