Changing yarn to pnpm

README.md

@@ -13,7 +13,7 @@
 
 ## Requirements
 + [NodeJS](https://nodejs.org/)
-+ [Yarn](https://yarnpkg.com/)
++ [pnpm](https://pnpm.io/)
 + [curl](https://curl.se/)
 + [patch](https://savannah.gnu.org/projects/patch/)
 + [jq](https://jqlang.github.io/jq/)
@@ -36,7 +36,7 @@ cd patches/
 4. Build Element Web
 ```
 cd ../element-web
-yarn dist
+pnpm dist
 ```
 
 ## License