added node version to necessary docs (#1346)

docs/content/tutorial/0-set-up-your-development-environment.md

@@ -42,6 +42,16 @@ Node.js is an environment that can execute JavaScript code on outside of the bro
 
 Node.js has a bundled package manager called npm. npm helps you install "packages" which are small pieces of code that you can leverage in your Node.js applications. Medusa's core is itself a package distributed via npm and so are all of the plugins that exist around the core. [You can install Node.js from here.](https://nodejs.org/en/)
 
+:::caution
+
+Medusa supports Node versions 14 and 16. You can check which Node version you have using the following command:
+
+```bash
+node -v
+```
+
+:::
+
 If you prefer using something like homebrew you can also run:
 
 ```