Fix links in reference section

content/en/docs/reference/access-authn-authz/admission-controllers.md

@@ -730,7 +730,7 @@ See the [resourceQuota design doc](https://git.k8s.io/community/contributors/des
 For [RuntimeClass](/docs/concepts/containers/runtime-class/) definitions which describe an overhead associated with running a pod,
 this admission controller will set the pod.Spec.Overhead field accordingly.
 
-See also [Pod Overhead](/docs/concepts/configuration/pod-overhead/)
+See also [Pod Overhead](/docs/concepts/scheduling-eviction/pod-overhead/)
 for more information.
 
 ### SecurityContextDeny {#securitycontextdeny}

content/en/docs/reference/access-authn-authz/authorization.md

@@ -202,6 +202,6 @@ action the account could take. This applies regardless of authorization mode.
 
 ## {{% heading "whatsnext" %}}
 
-* To learn more about Authentication, see **Authentication** in [Controlling Access to the Kubernetes API](/docs/reference/access-authn-authz/controlling-access/).
+* To learn more about Authentication, see **Authentication** in [Controlling Access to the Kubernetes API](/docs/concepts/security/controlling-access/).
 * To learn more about Admission Control, see [Using Admission Controllers](/docs/reference/access-authn-authz/admission-controllers/).
 

content/en/docs/reference/access-authn-authz/bootstrap-tokens.md

@@ -12,10 +12,10 @@ weight: 20
 
 Bootstrap tokens are a simple bearer token that is meant to be used when
 creating new clusters or joining new nodes to an existing cluster.  It was built
-to support [kubeadm](/docs/reference/setup-tools/kubeadm/kubeadm/), but can be used in other contexts
+to support [kubeadm](/docs/reference/setup-tools/kubeadm/), but can be used in other contexts
 for users that wish to start clusters without `kubeadm`. It is also built to
-work, via RBAC policy, with the [Kubelet TLS
-Bootstrapping](/docs/reference/command-line-tools-reference/kubelet-tls-bootstrapping/) system.
+work, via RBAC policy, with the
+[Kubelet TLS Bootstrapping](/docs/reference/command-line-tools-reference/kubelet-tls-bootstrapping/) system.
 
 
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