chore: lint examples

examples/basic-render/app.js

@@ -5,11 +5,16 @@ Vue.use(VueMeta)
 
 Vue.component('child', {
   name: 'Child',
-  props: ['page'],
-  render (h) {
+  props: {
+    page: {
+      type: String,
+      default: ''
+    }
+  },
+  render(h) {
     return h('h3', null, this.page)
   },
-  metaInfo () {
+  metaInfo() {
     return {
       title: this.page
     }