chore(website): switch yarn to pnpm commands

website/README.md

@@ -4,30 +4,30 @@ This website is built using [Docusaurus 2](https://docusaurus.io/), a modern sta
 
 ### Installation
 
-```
-$ yarn
+```sh
+pnpm install
 ```
 
 ### Local Development
 
-```
-$ yarn start
+```sh
+pnpm run start
 ```
 
 This command starts a local development server and opens up a browser window. Most changes are reflected live without having to restart the server.
 
 ### Build
 
-```
-$ yarn build
+```sh
+pnpm run build
 ```
 
 This command generates static content into the `build` directory and can be served using any static contents hosting service.
 
 ### Deployment
 
-```
-$ GIT_USER=<Your GitHub username> USE_SSH=true yarn deploy
+```sh
+GIT_USER=<Your GitHub username> USE_SSH=true pnpm run deploy
 ```
 
 If you are using GitHub pages for hosting, this command is a convenient way to build the website and push to the `gh-pages` branch.