docs: update ad doc

Author: tangjinzhou

site/components/api.vue

@@ -1,13 +1,15 @@
 <template>
   <div class="markdown api-container">
-    <GoogleAds />
+    <GoogleAds v-if="showAd" />
     <slot v-if="isZhCN" name="cn" />
     <slot v-else />
   </div>
 </template>
 <script>
 import { isZhCN } from '../util';
 import GoogleAds from './GoogleAds';
+
+const showAd = location.host.indexOf('antdv.com') > -1;
 export default {
   name: 'Api',
   components: {
@@ -18,6 +20,7 @@ export default {
   },
   data() {
     return {
+      showAd,
       isZhCN: isZhCN(this.demoContext.name),
     };
   },

site/components/layout.vue

@@ -329,7 +329,7 @@ export default {
                           ],
                         }}
                       ></router-view>
-                      <GoogleAds key={`GoogleAds_${$route.path}`} />
+                      {showAd ? <GoogleAds key={`GoogleAds_${$route.path}`} /> : null}
                     </div>
                   ) : (
                     ''