添加逾期说明

packageA/receivables/detail.js

@@ -55,6 +55,10 @@ Page({
       title: '逾期金额',
       width: 200,
       key: 'overdueamount'
+    }, {
+      title: '逾期说明',
+      width: 400,
+      key: 'overdueexplanation'
     }],
     sumWidth: 0,
     "content": {