docs(contributing): clean up paragraph about local dependencies (#1023)

Author: sarahdayan

CONTRIBUTING.md

@@ -29,11 +29,11 @@ Then:
 
 When every check is green and a team member approves, your contribution is merged! 🚀
 
-For the local dependencies we require previously set up:
+Before contributing, make sure you have the following dependencies set up on your machine:
 
-- yarn v1
-- node (version available in [.nvmrc](https://github.com/algolia/autocomplete/blob/next/.nvmrc))
-- setup for node-gyp (make sure you have called `xcode-select --install` a first time on macOS
+- [Yarn v1](https://classic.yarnpkg.com/)
+- [Node.js](https://nodejs.org/) (version available in [.nvmrc](https://github.com/algolia/autocomplete/blob/next/.nvmrc))
+- setup for [node-gyp](https://github.com/nodejs/node-gyp) (on macOS, install the XCode Command Line Tools by running `xcode-select --install` in the terminal if you haven't already)
 - a version of Chrome/Chromium (for Puppeteer)
 
 ## Commit conventions