Add note about checking kubectl version

In "Test to ensure the version you installed is up-to-date:", the command "kubectl version --client" is given but on running it on my system it says "This version information is deprecated and will be replaced with the output from kubectl version --short". But kubectl --short also gives a warning. So I thought it would be best to update  the docs to add a note to ignore this warning.

Co-Authored-By: Tim Bannister <tim@scalefactory.com>

content/en/docs/tasks/tools/install-kubectl-linux.md

@@ -95,6 +95,16 @@ For example, to download version {{< param "fullversion" >}} on Linux, type:
    ```bash
    kubectl version --client
    ```
+   {{< note >}}
+   The above command will generate a warning:
+   ```
+   WARNING: This version information is deprecated and will be replaced with the output from kubectl version --short.
+   ```
+   You can ignore this warning. You are only checking the version of `kubectl` that you
+   have installed.
+   
+   {{< /note >}}
+   
    Or use this for detailed view of version:
 
    ```cmd

content/en/docs/tasks/tools/install-kubectl-macos.md

@@ -116,6 +116,17 @@ The following methods exist for installing kubectl on macOS:
    ```bash
    kubectl version --client
    ```
+   
+   {{< note >}}
+   The above command will generate a warning:
+   ```
+   WARNING: This version information is deprecated and will be replaced with the output from kubectl version --short.
+   ```
+   You can ignore this warning. You are only checking the version of `kubectl` that you
+   have installed.
+   
+   {{< /note >}}
+   
    Or use this for detailed view of version:
 
    ```cmd

content/en/docs/tasks/tools/install-kubectl-windows.md

@@ -66,6 +66,16 @@ The following methods exist for installing kubectl on Windows:
    ```cmd
    kubectl version --client
    ```
+   {{< note >}}
+   The above command will generate a warning:
+   ```
+   WARNING: This version information is deprecated and will be replaced with the output from kubectl version --short.
+   ```
+   You can ignore this warning. You are only checking the version of `kubectl` that you
+   have installed.
+   
+   {{< /note >}}
+   
    Or use this for detailed view of version:
 
    ```cmd