mars auth text updated

assets/cards/link_card.json

@@ -9,7 +9,7 @@
                 {
                     "type": "TextBlock",
                     "wrap": true,
-                    "text": "Open secured portal"
+                    "text": "$header"
                 }
             ]
         },

bots/messaging_extension_action_preview_bot.py

@@ -388,7 +388,8 @@ class TeamsMessagingExtensionsActionPreviewBot(TeamsActivityHandler):
         cmd_mars_service = i18n.t("cmd_mars_service")
 
         if message_lower == cmd_mars_service.lower():
-            title = "Open Auth page"
+            header = "Service account authorization:"
+            title = "Start Authorization"
             url = f"https://{AppConfig.MARS_FQDN}/service-auth"
             card = CardHelper.load_assets_card("link_card",
                                                context=dict(title=title,