provisioner/windows-shell: Add HCL2 example to documentation

website/pages/docs/provisioners/windows-shell.mdx

@@ -18,6 +18,9 @@ The windows-shell Packer provisioner runs commands on a Windows machine using
 
 The example below is fully functional.
 
+<Tabs>
+<Tab heading="JSON">
+
 ```json
 {
   "type": "windows-shell",
@@ -25,6 +28,18 @@ The example below is fully functional.
 }
 ```
 
+</Tab>
+<Tab heading="HCL2">
+
+```hcl
+provisioner "windows-shell" {
+  inline = ["dir c:\\"]
+}
+```
+
+</Tab>
+</Tabs>
+
 ## Configuration Reference
 
 @include 'provisioners/shell-config.mdx'