docs: ✏️ fix some typos and formatting

runbooks/source/eks-cluster.html.md.erb

@@ -1,7 +1,7 @@
 ---
 title: EKS Cluster
 weight: 350
-last_reviewed_on: 2024-03-18
+last_reviewed_on: 2024-07-08
 review_in: 6 months
 ---
 
@@ -167,8 +167,8 @@ terraform apply
 
 [cluster build pipeline]: https://concourse.cloud-platform.service.justice.gov.uk/teams/main/pipelines/create-cluster
 
-# Provisiong a custom cluster
+## Provisioning a custom cluster
 
-If you working on a task that involves changing/adding cluster configuration or components, you can have Concourse execute a clean cluster build for you based off your working infrastructure branch. Refer to the instructions detailed in the Concourse repository [pipelines README](https://github.com/ministryofjustice/cloud-platform-terraform-concourse/blob/main/pipelines/README.md#custom-cluster-pipeline) for the steps to follow.
+If you're working on a task that involves changing/adding cluster configuration or components, you can have Concourse execute a clean cluster build for you based off your working infrastructure branch. Refer to the instructions detailed in the Concourse repository [pipelines README](https://github.com/ministryofjustice/cloud-platform-terraform-concourse/blob/main/pipelines/README.md#custom-cluster-pipeline) for the steps to follow.
 
-Once you're done with your customised cluster, you can have Concourse delete it for you using the branch flag of the [CLI delete-cluster command](https://runbooks.cloud-platform.service.justice.gov.uk/delete-cluster.html#delete-the-cluster-with-concourse-delete-cluster-pipeline).
+Once you're done with your customised cluster, you can pass your infrastructure branch name to the branch flag of the [CLI delete-cluster command](https://runbooks.cloud-platform.service.justice.gov.uk/delete-cluster.html#delete-the-cluster-with-concourse-delete-cluster-pipeline).