Update DataSyncLogPowerShellRunbook.ps1

Best practice to include details about the modules this script requires as dependencies

See:
https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_requires?view=powershell-6

Author: Tiberriver256

samples/features/sql-data-sync/DataSyncLogPowerShellRunbook.ps1

@@ -1,4 +1,5 @@
-#Data Sync OMS Integration Runbook
+#Requires -Modules @{ ModuleName="AzureRM.Sql"; ModuleVersion="4.12.1" }
+#Data Sync OMS Integration Runbook
 
 #To use this script Change all the strings below to reflect your information.