fix: 修正考试平台 URL，更新为确认页面链接

src/modules/student/lab/composables/useCompetition.ts

@@ -68,7 +68,7 @@ export function useCompetition() {
   const examURL = computed<string>(() => {
     if (!examList.value.length) return ''
     const [first] = examList.value
-    return `${import.meta.env.VITE_EXAM_SHOW_URL}/exam/${first?.exam_id}`
+    return `${import.meta.env.VITE_EXAM_SHOW_URL}/confirm/${first?.exam_id}`
     // return `https://dev.ezijing.com:5173/exam/7003551966412406784?has_time=0&has_submit=0&has_save=1&show_answer=1`
   })
   const fetchExamList = async () => {