docs: add reference to nodejs minimum version in installing guide

en/starter/installing.md

@@ -10,6 +10,10 @@ redirect_from: "/starter/installing.html"
 
 Assuming you've already installed [Node.js](https://nodejs.org/), create a directory to hold your application, and make that your working directory.
 
+<div class="doc-box doc-info" markdown="1">
+Check the minimum required Node.js for each Express version [here](/{{ page.lang }}/starter/faq.html#which-is-the-minimum-version-of-nodejs-that-express-supports).
+</div>
+
 ```console
 $ mkdir myapp
 $ cd myapp