Update protect-resource.mdx

Fix wrong typing 'cusom_data' to 'custom_data'

versioned_docs/version-1.x/docs/recipes/rbac/protect-resource.mdx

@@ -110,7 +110,7 @@ const config: LogtoConfig = {
 };
 ```
 
-Per our [assumption](#assumption), scope `cusom_data` is not available in the API Resource `https://api-1.store.io`. When getting an Access Token:
+Per our [assumption](#assumption), scope `custom_data` is not available in the API Resource `https://api-1.store.io`. When getting an Access Token:
 
 ```ts
 const accessToken = await logtoClient.getAccessToken('https://api-1.store.io');