feat: 云教练预览页面返回调用api:'back'

src/views/co-ai/index.tsx

@@ -152,7 +152,7 @@ export default defineComponent({
 
     // 返回
     const goback = () => {
-      postMessage({ api: 'goBack' });
+      postMessage({ api: 'back' });
     };
     /** 去云教练 */
     const handleGoto = () => {