fix ui.

src/oj/submission/list.vue

@@ -123,7 +123,7 @@ const columns = computed(() => {
       render: (row) =>
         parseTime(
           row.create_time,
-          isDesktop ? "YYYY-MM-DD hh:mm:ss" : "M-D hh:mm"
+          isDesktop ? "YYYY-MM-DD HH:mm:ss" : "M-D hh:mm"
         ),
     },
     {