fix: checkout.vue methods 间缺逗号语法错误

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

cfc-frontend/pages/shop/checkout/checkout.vue

@@ -723,7 +723,7 @@ export default {
     selectOnlineSlot(slot) {
       this.selectedTimeSlot = slot
       this.showOnlineSlotModal = false
-    }
+    },
     loadUserPoints() {
       var that = this
       uni.request({
@@ -855,7 +855,7 @@ export default {
     selectTimeSlot(slot) {
       this.selectedTimeSlot = slot
       this.showTimeSlotModal = false
-    }
+    },
     getImageUrl: function(path) {
       return config.API_BASE_URL + path
     }