feat: add field_mapping占位

Author: niuweili

flashduty/zh/1. On-call/5. 集成引导/8.5 Webhooks/8.5.5 ServiceNow 同步.md

@@ -121,10 +121,10 @@ url: "https://docs.flashcat.cloud/zh/flashduty/service-now-sync"
             sys_id: current.getUniqueValue(),
             short_description: current.getValue("short_description"),
             description: current.getValue("description"),
-            state: current.getDisplayValue("state"),
             impact: current.getDisplayValue("impact"),
             urgency: current.getDisplayValue("urgency"),
-            comments: getLastComment(current.getUniqueValue())
+            comments: getLastComment(current.getUniqueValue()),
+<label name='field_mapping' tab='12'>{original.key}: current.getDisplayValue("{original.key}")</label>
         };
 
         try {