Modify GCP service broker docs (#5727)
Modify GCP service broker docs (#5727)

Co-Authored-By: Klaudia Grzondziel <061b7484c464fc4e583c427a028afc8ee730f897@users.noreply.github.com>

kyma-project/kyma,kyma-project/kyma,kyma-project/kyma,kyma-project/kyma