Fix paths (forgot to stage the changes in previous commit :P)

packer/windowsserver2019.pkr.hcl

@@ -200,6 +200,7 @@ build {
 
   provisioner "powershell" {
     scripts = [
+      "scripts/Install-Prerequisites.ps1",
       "scripts/Install-WinGet.ps1"
     ]
   }
@@ -241,13 +242,13 @@ build {
   provisioner "file" {
     only        = ["vsphere-iso.srv2019-virtual"]
     destination = "C:\\Payload\\"
-    source      = "scripts/Server2019/payload/"
+    source      = "scripts/payload/"
   }
 
   provisioner "powershell" {
     only    = ["vsphere-iso.srv2019-virtual"]
     scripts = [
-      "scripts/Server2019/Register-ScheduledTask.ps1"
+      "scripts/Register-ScheduledTask.ps1"
     ]
   }