provisioner/salt-masterless: Add HCL2 example to docs

website/pages/docs/provisioners/salt-masterless.mdx

@@ -21,6 +21,9 @@ master.
 
 The example below is fully functional.
 
+<Tabs>
+<Tab heading="JSON">
+
 ```json
 {
   "type": "salt-masterless",
@@ -28,6 +31,18 @@ The example below is fully functional.
 }
 ```
 
+</Tab>
+<Tab heading="HCL2">
+
+```hcl
+provisioner "salt-masterless" {
+  local_state_tree = "/Users/me/salt"
+}
+```
+
+</Tab>
+</Tabs>
+
 ## Configuration Reference
 
 The reference of available configuration options is listed below. The only