feat（scrm-3437）：开票上限

src/pages/parkingFee/mixins/parkingReceipt/parkingReceipt.js

@@ -111,7 +111,7 @@ export default {
   },
   methods: {
     checkboxchange2 (e, index) {
-      if (this.boxids.length > 2) {
+      if (this.boxids.length > this.choosekMax) {
         console.log(2222222222)
         this.$refs.checkboxes[index].toggle();
       }