Fix broken Install-PSResource test with warning condition incorrect

Author: anamnavi

test/InstallPSResourceTests/InstallPSResourceV2Server.Tests.ps1

@@ -557,7 +557,7 @@ Describe 'Test Install-PSResource for V2 Server scenarios' -tags 'CI' {
     # Test that AuthenticodeCheck parameter displays warning on non-Windows
     It "Install with AuthenticodeCheck on non-Windows should display warning" -Skip:(Get-IsWindows) {
         Install-PSResource -Name $testModuleName -Repository $PSGalleryName -TrustRepository -AuthenticodeCheck -WarningVariable warn -WarningAction SilentlyContinue
-        $warn[0] | Should -Contain "Authenticode check cannot be performed on Linux or MacOS"
+        $warn[0] | Should -Match "Authenticode check cannot be performed on Linux or MacOS"
         $res = Get-InstalledPSResource $testModuleName
         $res.Name | Should -Be $testModuleName
     }