Add admonition type to shortcode (#9482)

* Change existing admon blocks

* Fix includes issue

content/en/docs/reference/command-line-tools-reference/feature-gates.md

@@ -147,7 +147,7 @@ A *Beta* feature means:
   that can be upgraded independently, you may be able to relax this restriction.
 
 {{< note >}}
-**Note:** Please do try *Beta* features and give feedback on them!
+Please do try *Beta* features and give feedback on them!
 After they exit beta, it may not be practical for us to make more changes.
 {{< /note >}}
 

content/en/docs/reference/command-line-tools-reference/kubelet-tls-bootstrapping.md

@@ -221,7 +221,7 @@ specified by `--kubeconfig`. The certificate and key file will be placed in the
 directory specified by `--cert-dir`.
 
 {{< note >}}
-**Note:** The following flags are required to enable this bootstrapping when starting the kubelet:
+The following flags are required to enable this bootstrapping when starting the kubelet:
 
 ```
 --bootstrap-kubeconfig="/path/to/bootstrap/kubeconfig"
@@ -251,7 +251,7 @@ certificate. To enable this feature pass the following flag to the kubelet:
 ```
 
 {{< note >}}
-**Note:** The CSR approving controllers implemented in core Kubernetes do not
+The CSR approving controllers implemented in core Kubernetes do not
 approve node serving certificates for [security
 reasons](https://github.com/kubernetes/community/pull/1982). To use
 `RotateKubeletServerCertificate` operators need to run a custom approving