Adding api-version property to GetSpotPlacementScores.json example file

Author: Elina-L

specification/compute/resource-manager/Microsoft.Compute/DiagnosticRP/stable/2025-06-01/examples/GetSpotPlacementScores.json

@@ -1,7 +1,8 @@
 {
   "parameters": {
     "subscriptionId": "00000000-0000-0000-0000-000000000000",
-    "location": "eastus"
+    "location": "eastus",
+    "api-version": "2025-06-01",
   },
   "responses": {
     "200": {
@@ -20,4 +21,4 @@
       }
     }
   }
-}
+}