update disk type documentation (#12406) (#8819)

[upstream:054a0d66c9667fe9d54619127d67cac3fc0bc81d]

Signed-off-by: Modular Magician <[email protected]>

Author: modular-magician

.changelog/12406.txt

@@ -0,0 +1,3 @@
+```release-note:none
+
+```

website/docs/r/container_cluster.html.markdown

@@ -601,7 +601,7 @@ as "Intel Haswell" or "Intel Sandy Bridge".
 
 * `disk_size` - (Optional) Size of the disk attached to each node, specified in GB. The smallest allowed disk size is 10GB. Defaults to `100`
 
-* `disk_type` - (Optional) Type of the disk attached to each node (e.g. 'pd-standard', 'pd-ssd' or 'pd-balanced'). Defaults to `pd-standard`
+* `disk_type` - (Optional) Type of the disk attached to each node (e.g. 'pd-standard', 'pd-ssd', 'pd-balanced', or 'hyperdisk-balanced'). Defaults to `hyperdisk-balanced` if `hyperdisk-balanced` is supported and `pd-balanced` is not supported for the machine type; otherwise defaults to `pd-balanced`.
 
 * `image_type` - (Optional) The default image type used by NAP once a new node pool is being created. Please note that according to the [official documentation](https://cloud.google.com/kubernetes-engine/docs/how-to/node-auto-provisioning#default-image-type) the value must be one of the [COS_CONTAINERD, COS, UBUNTU_CONTAINERD, UBUNTU]. __NOTE__ : COS AND UBUNTU are deprecated as of `GKE 1.24`