mention preview flag for CLI extensions

Author: mbashtovaya

articles/operator-nexus/howto-install-cli-extensions.md

@@ -11,16 +11,21 @@ ms.date: 09/05/2024
 ---
 
 # Prepare to install Azure CLI extensions
+
 This how-to guide explains the steps for installing the required az CLI and extensions required to interact with Operator Nexus.
 
 Installations of the following CLI extensions are required:
 `networkcloud` (for Microsoft.NetworkCloud APIs) and `managednetworkfabric` (for Microsoft.ManagedNetworkFabric APIs).
 
 If you haven't already installed Azure CLI: [Install Azure CLI][installation-instruction]. The aka.ms links download the latest available version of the extension.
-For list of available versions, see [the extension release history][az-cli-networkcloud-cli-versions].
+
+>[!NOTE]
+>The `--allow-preview=True` needs to be explicitely set to install the preview version of an extension.
 
 ## Install `networkcloud` CLI extension
 
+- For list of available versions, see [the networkcloud extension release history][az-cli-networkcloud-cli-versions].
+
 - Upgrade any previously installed version of the extension
 
     ```azurecli
@@ -36,6 +41,8 @@ For list of available versions, see [the extension release history][az-cli-netwo
 
 ## Install `managednetworkfabric` CLI extension
 
+- For list of available versions, see [the managednetworkfabric extension release history][az-cli-managednetworkfabric-cli-versions].
+
 - Upgrade any previously installed version of the extension
 
     ```azurecli
@@ -51,17 +58,19 @@ For list of available versions, see [the extension release history][az-cli-netwo
 
 ## Install other Azure extensions
 
-   ```azurecli
-   az extension add --yes --upgrade --name customlocation
-   az extension add --yes --upgrade --name k8s-extension
-   az extension add --yes --upgrade --name k8s-configuration
-   az extension add --yes --upgrade --name connectedmachine
-   az extension add --yes --upgrade --name monitor-control-service
-   az extension add --yes --upgrade --name ssh
-   az extension add --yes --upgrade --name connectedk8s
-   ```
+Install the additional Azure CLI extensions that Nexus makes use of.
+
+```azurecli
+az extension add --yes --upgrade --name customlocation
+az extension add --yes --upgrade --name k8s-extension
+az extension add --yes --upgrade --name k8s-configuration
+az extension add --yes --upgrade --name connectedmachine
+az extension add --yes --upgrade --name monitor-control-service
+az extension add --yes --upgrade --name ssh
+az extension add --yes --upgrade --name connectedk8s
+```
 
-- List installed CLI extensions and versions
+## List installed CLI extensions and versions
 
 List the extension version running:
 
@@ -89,3 +98,4 @@ ssh                      2.0.5
 [installation-instruction]: https://aka.ms/azcli
 
 [az-cli-networkcloud-cli-versions]: https://github.com/Azure/azure-cli-extensions/blob/main/src/networkcloud/HISTORY.rst
+[az-cli-managednetworkfabric-cli-versions]: https://github.com/Azure/azure-cli-extensions/blob/main/src/managednetworkfabric/HISTORY.rst