📝 fix example bug in doc demo (#2234)

docs/faq/README.md

@@ -679,10 +679,10 @@ const childrenPath = ['/app1', '/app2'];
 router.beforeEach((to, from, next) => {
   if (to.name) {
     // There is a name attribute, indicating that it is the route of the main project
-    next();
+    return next();
   }
   if (childrenPath.some((item) => to.path.includes(item))) {
-    next();
+    return next();
   }
   next({ name: '404' });
 });

docs/faq/README.zh.md

@@ -687,10 +687,10 @@ const childrenPath = ['/app1', '/app2'];
 router.beforeEach((to, from, next) => {
   if (to.name) {
     // 有 name 属性，说明是主应用的路由
-    next();
+    return next();
   }
   if (childrenPath.some((item) => to.path.includes(item))) {
-    next();
+    return next();
   }
   next({ name: '404' });
 });