Update _index.md

content/en/docs/tasks/debug/debug-cluster/_index.md

@@ -252,14 +252,14 @@ This is an incomplete list of things that could go wrong, and how to adjust your
 - Network partition within cluster, or between cluster and users
 - Crashes in Kubernetes software
 - Data loss or unavailability of persistent storage (e.g. GCE PD or AWS EBS volume)
-- Operator error, for example misconfigured Kubernetes software or application software
+- Operator error, for example, misconfigured Kubernetes software or application software
 
 ### Specific scenarios
 
 - API server VM shutdown or apiserver crashing
   - Results
     - unable to stop, update, or start new pods, services, replication controller
-    - existing pods and services should continue to work normally, unless they depend on the Kubernetes API
+    - existing pods and services should continue to work normally unless they depend on the Kubernetes API
 - API server backing storage lost
   - Results
     - the kube-apiserver component fails to start successfully and become healthy
@@ -291,7 +291,7 @@ This is an incomplete list of things that could go wrong, and how to adjust your
 
 ### Mitigations
 
-- Action: Use IaaS provider's automatic VM restarting feature for IaaS VMs
+- Action: Use the IaaS provider's automatic VM restarting feature for IaaS VMs
   - Mitigates: Apiserver VM shutdown or apiserver crashing
   - Mitigates: Supporting services VM shutdown or crashes