Update README.md

Author: gonzaloriestra

README.md

@@ -13,7 +13,7 @@ Learn more in the [commands docs](./packages/cli/README.md#commands).
 
 <p>&nbsp;</p>
 
-### Before you begin ###
+## Before you begin
 
 Install the latest version of  [Node.js](https://nodejs.org/en/download/) and [npm](https://docs.npmjs.com/getting-started) (or another package manager of your choice).