doc: add official website link

README.md

@@ -12,6 +12,8 @@
 
 Gopeed (full name Go Speed), a high-speed downloader developed by `Golang` + `Flutter`, supports (HTTP, BitTorrent, Magnet) protocol, and supports all platforms.
 
+Visit ✈️[Official Website](https://gopeed.com)
+
 ## Install
 
 **Supported platforms**
@@ -53,6 +55,7 @@ docker-compose up -d
 #### Access Gopeed
 
 When the docker container is running, you can access the web page through `http://localhost:9999`.
+
 > Tip: Modify the download path to `/download` on the setting page to access the downloaded files on the host.
 
 ## Donate