The default port used by serve has changed (facebook#11619)

Author: leo

docusaurus/docs/deployment.md

@@ -8,14 +8,14 @@ sidebar_label: Deployment
 
 ## Static Server
 
-For environments using [Node](https://nodejs.org/), the easiest way to handle this would be to install [serve](https://github.com/zeit/serve) and let it handle the rest:
+For environments using [Node](https://nodejs.org/), the easiest way to handle this would be to install [serve](https://github.com/vercel/serve) and let it handle the rest:
 
 ```sh
 npm install -g serve
 serve -s build
 ```
 
-The last command shown above will serve your static site on the port **5000**. Like many of [serve](https://github.com/zeit/serve)’s internal settings, the port can be adjusted using the `-l` or `--listen` flags:
+The last command shown above will serve your static site on the port **3000**. Like many of [serve](https://github.com/vercel/serve)’s internal settings, the port can be adjusted using the `-l` or `--listen` flags:
 
 ```sh
 serve -s build -l 4000