Merge branch 'fix-typo-in-k8s-cluster-docs' into 'master'

Improve wording of cluster monitoring docs

See merge request gitlab-org/gitlab-ee!5056

doc/user/project/clusters/index.md

@@ -312,7 +312,7 @@ GitLab CI/CD build environment.
 
 > [Introduced](https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/4701) in [GitLab Ultimate][ee] 10.6.
 
-When [Prometheus is deployed](#installing-applications), GitLab will automatically monitor the cluster's health. At the top of the cluster settings page, CPU and Memory utilization is displayed, along with the total amount available. If the cluster runs out of memory, pods will become to be shutdown or fail to start. 
+When [Prometheus is deployed](#installing-applications), GitLab will automatically monitor the cluster's health. At the top of the cluster settings page, CPU and Memory utilization is displayed, along with the total amount available. Keeping an eye on cluster resources can be important, if the cluster runs out of memory pods may be shutdown or fail to start. 
 
 ![Cluster Monitoring](img/k8s_cluster_monitoring.png)