chore(env): Update .env.example to use DOTCMS_API_KEY

- Changed DOTCMS_API_TOKEN to DOTCMS_API_KEY for consistency in DotCMS API configuration.

Author: fmontes

examples/dotcms-laravel/.env.example

@@ -69,4 +69,4 @@ VITE_APP_NAME="${APP_NAME}"
 
 # DotCMS API Configuration
 DOTCMS_HOST=your-dotcms-instance-url
-DOTCMS_API_TOKEN=your-dotcms-instance-token
+DOTCMS_API_KEY=your-dotcms-instance-token