Update azuredeploy.json

Playbooks/Send-UnhealthyAzureArcResourceAlert/azuredeploy.json

@@ -4,9 +4,9 @@
     "metadata":  {
         "title":  "Send Unhealthy Azure Arc Resource Alert",
         "description":  " Sentinel logic app designed to send an email alert when an unhealthy Azure Arc resource is detected. The logic app is implemented using Azure Logic Apps and utilizes Azure Monitor Logs and Office 365 connectors for its functionality.",
-        "prerequisites":  "Office 365 Account",
+        "prerequisites":  ["Office 365 Account"],
         "postDeployment":  [
-            "Follow Post deployment steps from playbook readme file."
+            "Follow Post-deployment steps from the playbook readme file."
         ],
         "prerequisitesDeployTemplateFile":  "../../Playbooks/Send-UnhealthyAzureArcResourceAlert/azuredeploy.json",
         "lastUpdateTime":  "2023-07-16T12:00:00.000Z",