add Grafana to Random Tools list in introduction documentation

Author: arkadiusjonczek

DOCUMENTATION/content/introduction/index.md

@@ -97,7 +97,7 @@ Beanstalkd - RabbitMQ - PHP Worker
 - **Queueing Management:**
 Beanstalkd Console - RabbitMQ Console
 - **Random Tools:**
-HAProxy - Certbot - Blackfire - Selenium - Jenkins - ElasticSearch - Kibana - Mailhog - MailDev - Minio - Varnish - Swoole - Laravel Echo...
+HAProxy - Certbot - Blackfire - Selenium - Jenkins - ElasticSearch - Kibana - Grafana - Mailhog - MailDev - Minio - Varnish - Swoole - Laravel Echo...
 
 Laradock introduces the **Workspace** Image, as a development environment.
 It contains a rich set of helpful tools, all pre-configured to work and integrate with almost any combination of Containers and tools you may choose.