[CI][Docs] Minor fixes in cluster-management.md

There were a couple misses from when I last touched the docs that made them
invalid in some subtle ways (mainly some slightly incorrect TF target names).
This patch fixes that to make them easier to copy and paste.

Author: boomanaiden154

premerge/cluster-management.md

@@ -134,15 +134,16 @@ ours.
 ### Uninstalling the Helm Charts
 
 For the example commands below we will be modifying the cluster in
-`us-central1-a`. You can replace `module.premerge_cluster_us_central` with
-`module.premerge_cluster_us_west` to switch which cluster you are working on.
+`us-central1-a`. You can replace `module.premerge_cluster_us_central_resources`
+with `module.premerge_cluster_us_west_resources` to switch which cluster you
+are working on.
 
 To begin, start by uninstalling the helm charts by using resource targetting
 on a kubernetes destroy command:
 
 ```bash
-terraform destroy -target module.premerge_cluster_us_central.helm_release.github_actions_runner_set_linux
-terraform destroy -target module.premerge_cluster_us_central.helm_release.github_actions_runner_set_windows
+terraform destroy -target module.premerge_cluster_us_central_resources.helm_release.github_actions_runner_set_linux
+terraform destroy -target module.premerge_cluster_us_central_resources.helm_release.github_actions_runner_set_windows
 ```
 
 These should complete, but if they do not, we are still able to get things
@@ -153,8 +154,8 @@ manually delete them with `kubectl delete`. Follow up the previous terraform
 commands by deleting the kubernetes namespaces all the resources live in:
 
 ```bash
-terraform destroy -target module.premerge_cluster_us_central.kubernetes_namespace.llvm_premerge_linux_runners
-terraform destroy -target module.premerge_cluster_us_central.kubernetes_namespace.llvm_premerge_windows_runners
+terraform destroy -target module.premerge_cluster_us_central_resources.kubernetes_namespace.llvm_premerge_linux_runners
+terraform destroy -target module.premerge_cluster_us_central_resources.kubernetes_namespace.llvm_premerge_windows_runners
 ```
 
 If things go smoothly, these should complete quickly. If they do not complete,
@@ -198,12 +199,12 @@ version upgrades however.
 
 Start by destroying the helm chart:
 ```bash
-terraform destroy -target module.premerge_cluster_us_central.helm_release.github_actions_runner_controller
+terraform destroy -target module.premerge_cluster_us_central_resources.helm_release.github_actions_runner_controller
 ```
 
 Then delete the namespace to ensure there are no dangling resources
 ```bash
-terraform destroy -target module.premerge_cluster_us_central.kubernetes_namespace.llvm_premerge_controller
+terraform destroy -target module.premerge_cluster_us_central_resources.kubernetes_namespace.llvm_premerge_controller
 ```
 
 ### Bumping the Version Number