squash: add table caption

Signed-off-by: Andrew Keesler <[email protected]>

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

@@ -1049,6 +1049,7 @@ to run successfully) must be declared via the `user.exec.interactiveMode` field
 [kubeconfig](/docs/concepts/configuration/organize-cluster-access-kubeconfig/) (see table
 below for valid values).
 
+{{< table caption="interactiveMode values" >}}
 | `interactiveMode` Value | Meaning |
 | ----------------------- | ------- |
 | `Never` | This exec plugin never needs to use standard input, and therefore the exec plugin will be run regardless of whether standard input is available for user input. |
@@ -1057,6 +1058,7 @@ below for valid values).
 
 To use bearer token credentials, the plugin returns a token in the status of the
 [`ExecCredential`](/docs/reference/config-api/client-authentication.v1beta1/#client-authentication-k8s-io-v1beta1-ExecCredential)
+{{< /table >}}
 
 {{< tabs name="exec_plugin_ExecCredential_example_1" >}}
 {{% tab name="client.authentication.k8s.io/v1" %}}