mars command updated

bots/messaging_extension_action_preview_bot.py

@@ -390,7 +390,7 @@ class TeamsMessagingExtensionsActionPreviewBot(TeamsActivityHandler):
         if message_lower == cmd_mars_service.lower():
             title = "Open Auth page"
             url = f"https://{AppConfig.MARS_FQDN}/service-auth"
-            card = CardHelper.load_assets_card("default_card",
+            card = CardHelper.load_assets_card("link_card",
                                                context=dict(title=title,
                                                             url=url))
             attachments = [CardFactory.adaptive_card(card)]