docs: add dashboard ui tips (#12420)

Author: Baoyuantop

docs/en/latest/FAQ.md

@@ -65,7 +65,7 @@ It does the following dynamically:
 
 ## Does Apache APISIX have a user interface?
 
-Yes. Apache APISIX has an experimental feature called [Apache APISIX Dashboard](https://github.com/apache/apisix-dashboard), which is independent from Apache APISIX. To work with Apache APISIX through a user interface, you can deploy the Apache APISIX Dashboard.
+APISIX has a powerful built-in Dashboard [APISIX Dashboard](https://github.com/apache/apisix-dashboard). You can manage APISIX configurations through the [APISIX Dashboard](https://github.com/apache/apisix-dashboard) user interface.
 
 ## Can I write my own Plugins for Apache APISIX?
 

docs/en/latest/getting-started/README.md

@@ -61,6 +61,8 @@ Server: APISIX/Version
 
 You now have APISIX installed and running successfully!​
 
+APISIX includes a built-in Dashboard UI, accessible at http://127.0.0.1:9180/ui.
+
 ## Next Steps
 
 The following tutorial is based on the working APISIX, please keep everything running and move on to the next step.

docs/zh/latest/FAQ.md

@@ -67,7 +67,7 @@ APISIX 可以动态处理以下行为：
 
 ## APISIX 是否有控制台界面？
 
-APISIX 具有功能强大的 Dashboard，并且 [APISIX Dashboard](https://github.com/apache/apisix-dashboard) 是一个独立的项目。你可以通过 [APISIX Dashboard](https://github.com/apache/apisix-dashboard) 用户操作界面来部署 APISIX Dashboard。
+APISIX 内置功能强大的 Dashboard [APISIX Dashboard](https://github.com/apache/apisix-dashboard)。你可以通过 [APISIX Dashboard](https://github.com/apache/apisix-dashboard) 用户操作界面来管理 APISIX 配置。
 
 ## 我可以为 Apache APISIX 开发适合自身业务的插件吗？
 

docs/zh/latest/getting-started/README.md

@@ -61,6 +61,8 @@ Server: APISIX/Version
 
 现在，你已经成功安装并运行了 APISIX！
 
+APISIX 提供内置的 Dashboard UI，可访问 `http://127.0.0.1:9180/ui` 使用。
+
 ## 下一步
 
 如果你已经成功地安装了 APISIX 并且正常运行，那么你可以继续进行下面的教程。