Merge pull request #79794 from vhorne/ag-migrate

update parameter from Subra

Author: PRMerger14

articles/application-gateway/migrate-v1-v2.md

@@ -5,7 +5,7 @@ services: application-gateway
 author: vhorne
 ms.service: application-gateway
 ms.topic: article
-ms.date: 6/12/2019
+ms.date: 6/18/2019
 ms.author: victorh
 ---
 
@@ -128,7 +128,7 @@ To run the script:
       -sslCertificates $Certs `
       -trustedRootCertificates $trustedCert `
       -privateIpAddress "10.0.0.1" `
-      -publicIpResourceName "MyPublicIP" `
+      -publicIpResourceId "MyPublicIP" `
       -validateMigration -enableAutoScale
    ```