metadata fix

-------
cc: @j-martens

Author: j-martens

articles/devtest-labs/samples-cli.md

@@ -1,7 +1,7 @@
 ---
 title: Azure CLI Samples
 description: This article provides a list of Azure CLI  scripting samples that help you manage labs in Azure Lab Services.
-ms.topic: landing-page
+ms.topic: sample
 ms.date: 06/26/2020
 ---