update template in example to use M3 template name

Author: poanchen

specification/iotcentral/resource-manager/Microsoft.IoTCentral/stable/2021-06-01/examples/Apps_CreateOrUpdate.json

@@ -12,7 +12,7 @@
       "properties": {
         "displayName": "My IoT Central App",
         "subdomain": "my-iot-central-app",
-        "template": "iotc-default@1.0.0"
+        "template": "iotc-pnp-preview@1.0.0"
       }
     }
   },
@@ -34,7 +34,7 @@
           "applicationId": "6ebd8fd3-6e34-419e-908f-9be61ec6f6d6",
           "displayName": "My IoT Central App 2",
           "subdomain": "my-iot-central-app-2",
-          "template": "iotc-default@1.0.0"
+          "template": "iotc-pnp-preview@1.0.0"
         },
         "sku": {
           "name": "F1"
@@ -59,7 +59,7 @@
           "applicationId": "6ebd8fd3-6e34-419e-908f-9be61ec6f6d6",
           "displayName": "My IoT Central App",
           "subdomain": "my-iot-central-app",
-          "template": "iotc-default@1.0.0"
+          "template": "iotc-pnp-preview@1.0.0"
         },
         "sku": {
           "name": "F1"

specification/iotcentral/resource-manager/Microsoft.IoTCentral/stable/2021-06-01/examples/Apps_Get.json

@@ -23,7 +23,7 @@
           "applicationId": "6ebd8fd3-6e34-419e-908f-9be61ec6f6d6",
           "displayName": "My IoT Central App",
           "subdomain": "my-iot-central-app",
-          "template": "iotc-default@1.0.0"
+          "template": "iotc-pnp-preview@1.0.0"
         },
         "sku": {
           "name": "F1"

specification/iotcentral/resource-manager/Microsoft.IoTCentral/stable/2021-06-01/examples/Apps_ListByResourceGroup.json

@@ -23,7 +23,7 @@
               "applicationId": "6ebd8fd3-6e34-419e-908f-9be61ec6f6d6",
               "displayName": "My IoT Central App",
               "subdomain": "my-iot-central-app",
-              "template": "iotc-default@1.0.0"
+              "template": "iotc-pnp-preview@1.0.0"
             },
             "sku": {
               "name": "F1"

specification/iotcentral/resource-manager/Microsoft.IoTCentral/stable/2021-06-01/examples/Apps_ListBySubscription.json

@@ -22,7 +22,7 @@
               "applicationId": "6ebd8fd3-6e34-419e-908f-9be61ec6f6d6",
               "displayName": "My IoT Central App",
               "subdomain": "my-iot-central-app",
-              "template": "iotc-default@1.0.0"
+              "template": "iotc-pnp-preview@1.0.0"
             },
             "sku": {
               "name": "F1"

specification/iotcentral/resource-manager/Microsoft.IoTCentral/stable/2021-06-01/examples/Apps_Update.json

@@ -29,7 +29,7 @@
           "applicationId": "6ebd8fd3-6e34-419e-908f-9be61ec6f6d6",
           "displayName": "My IoT Central App 2",
           "subdomain": "my-iot-central-app-2",
-          "template": "iotc-default@1.0.0"
+          "template": "iotc-pnp-preview@1.0.0"
         },
         "sku": {
           "name": "F1"