Update course-adjust.tsx

src/school/approval-manage/course-adjust.tsx

@@ -121,7 +121,7 @@ export default defineComponent({
         if (browser().iPhone) {
           postMessage({ api: 'back' })
         } else {
-          this.$router.back()
+          router.back()
         }
         showToast('调整成功')
       } catch (e: any) {