style: 调整mapping弹窗字段名称

src/views/TemplateManagement/src/components/CreateReportTemplate/src/components/ReportFieldsConfiguration.vue

@@ -473,7 +473,7 @@ defineExpose({
           </div>
           <div class="right-label">
             <span style="color: var(--color-danger)">*</span>
-            <span>System Value</span>
+            <span>Output Value</span>
           </div>
         </div>
         <div style="max-height: 380px; overflow-y: auto">