Apply templates to all concepts and tasks to fix double bullets in TOC (#9149)

* Apply concept template to fix double bullet issue.

* Apply concept template

* Apply templates to tasks

content/en/docs/concepts/overview/kubernetes-api.md

@@ -2,9 +2,12 @@
 reviewers:
 - chenopis
 title: The Kubernetes API
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 weight: 30
 ---
 
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 Overall API conventions are described in the [API conventions doc](https://git.k8s.io/community/contributors/devel/api-conventions.md).
 
 API endpoints, resource types and samples are described in [API Reference](/docs/reference).
@@ -17,6 +20,12 @@ Kubernetes also stores its serialized state (currently in [etcd](https://coreos.
 
 Kubernetes itself is decomposed into multiple components, which interact through its API.
 
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 ## API changes
 
 In our experience, any system that is successful needs to grow and change as new use cases emerge or existing ones change. Therefore, we expect the Kubernetes API to continuously change and grow. However, we intend to not break compatibility with existing clients, for an extended period of time. In general, new API resources and new resource fields can be expected to be added frequently. Elimination of resources or fields will require following the [API deprecation policy](/docs/reference/using-api/deprecation-policy/).
@@ -121,3 +130,5 @@ DaemonSets, Deployments, HorizontalPodAutoscalers, Ingress, Jobs and ReplicaSets
 Other extensions resources can be enabled by setting `--runtime-config` on
 apiserver. `--runtime-config` accepts comma separated values. For example: to disable deployments and ingress, set
 `--runtime-config=extensions/v1beta1/deployments=false,extensions/v1beta1/ingress=false`
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