Update deployment template with the correct param name (#451)

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Two configs in the deployment templates have the wrong names.

### Description

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Fix the names.

### Contribution Checklist

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- [ ] The code builds clean without any errors or warnings
- [ ] The PR follows the [Contribution
Guidelines](https://github.com/microsoft/chat-copilot/blob/main/CONTRIBUTING.md)
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raises no violations
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Author: TaoChenOSU

scripts/deploy/main.bicep

@@ -423,15 +423,15 @@ resource appServiceWebConfig 'Microsoft.Web/sites/config@2022-09-01' = {
         value: 'Klarna Shopping'
       }
       {
-        name: 'Plugins:0:Url'
+        name: 'Plugins:0:ManifestDomain'
         value: 'https://www.klarna.com'
       }
       {
         name: 'Plugins:1:Name'
         value: 'WebSearcher'
       }
       {
-        name: 'Plugins:1:Url'
+        name: 'Plugins:1:ManifestDomain'
         value: 'https://${functionAppWebSearcherPlugin.properties.defaultHostName}'
       }
       {

scripts/deploy/main.json

@@ -5,7 +5,7 @@
     "_generator": {
       "name": "bicep",
       "version": "0.21.1.54444",
-      "templateHash": "8121623595763502084"
+      "templateHash": "11704216743072254394"
     }
   },
   "parameters": {
@@ -558,15 +558,15 @@
             "value": "Klarna Shopping"
           },
           {
-            "name": "Plugins:0:Url",
+            "name": "Plugins:0:ManifestDomain",
             "value": "https://www.klarna.com"
           },
           {
             "name": "Plugins:1:Name",
             "value": "WebSearcher"
           },
           {
-            "name": "Plugins:1:Url",
+            "name": "Plugins:1:ManifestDomain",
             "value": "[format('https://{0}', reference(resourceId('Microsoft.Web/sites', format('function-{0}-websearcher-plugin', variables('uniqueName'))), '2022-09-01').defaultHostName)]"
           },
           {