Updating the warning message

Author: bganapa

Azs.Update.Admin/Module/Azs.Update.Admin/Azs.Update.Admin.psd1

@@ -115,7 +115,7 @@ Licensed under the MIT License. See License.txt in the project root for license
 
             # ReleaseNotes of this module
             ReleaseNotes = '## 2018.12
-            * Added a warning to recommend running Test-AzureStack before Install-AzsUpdate
+            * Added a warning to recommend running Test-AzureStack before Install-AzsUpdate, supported with 1810 update
             '
 
         } # End of PSData hashtable

Azs.Update.Admin/Module/Azs.Update.Admin/Generated.PowerShell.Commands/SwaggerPathCommands/Install-AzsUpdate.ps1

@@ -95,10 +95,10 @@ function Install-AzsUpdate {
             $Name = Get-ResourceNameSuffix -ResourceName $Name
         }
 
-        Write-Warning -Message 'Run Test-AzureStack -Group UpdateReadiness to validate the status of your Azure Stack and resolve any operational issues found, including all warnings and failures.'
+        Write-Warning -Message 'Run Test-AzureStack -Group UpdateReadiness to validate the status of your Azure Stack and then resolve any operational issues found, including all warnings and failures.'
 
         if ($PsCmdlet.ShouldProcess($Name, "Install the update")) {
-            if ($Force.IsPresent -or $PsCmdlet.ShouldContinue("Run Test-AzureStack -Group UpdateReadiness to validate the status of your Azure Stack and resolve any operational issues found, including all warnings and failures. Are you sure you want to continue?", "Performing Update $Name")) {
+            if ($Force.IsPresent -or $PsCmdlet.ShouldContinue("Run Test-AzureStack -Group UpdateReadiness to validate the status of your Azure Stack and then resolve any operational issues found, including all warnings and failures. Are you sure you want to continue?", "Performing Update $Name")) {
 
                 $NewServiceClient_params = @{
                     FullClientTypeName = 'Microsoft.AzureStack.Management.Update.Admin.UpdateAdminClient'