Update CONTRIBUTING.md

Signed-off-by: Sora Morimoto <[email protected]>

Author: smorimoto

CONTRIBUTING.md

@@ -1,11 +1,15 @@
 ### Developement setup
 
 Requirements:
-* nodejs
-* corepack (shipped with nodejs, however on some distributions it is not distributed, in which case install it through npm using: `npm install -g corepack`)
 
-To regenerated the compiled javascript files in `dist/`, call:
+- [Node.js](https://nodejs.org)
+- [Corepack](https://nodejs.org/api/corepack.html)
+  - Shipped with Node.js, however on some distributions it is not distributed, in which case install it through npm using: `npm install --global corepack`
+
+To regenerated the compiled JavaScript files in `dist/`, call:
+
 ```
 corepack enable
+yarn install --immutable
 yarn build
 ```