update required node version (#272)

Author: khassel

getting-started/installation.md

@@ -14,8 +14,8 @@ installers can be found under:
 
 ## Manual Installation
 
-1. Download and install the latest _Node.js_ version, see the official
-   documentation:
+1. Download and install a [required](https://github.com/MagicMirrorOrg/MagicMirror/releases)
+   _Node.js_ version, see the official documentation:
 
 - [Linux based distributions](https://github.com/nodesource/distributions)
 - [Others](https://nodejs.org/en/download)

getting-started/requirements.md

@@ -30,6 +30,5 @@ Raspberry Pi OS versions based on Debian "Buster" are also no longer supported.
 
 ## Node
 
-::: warning NOTE Node v20.9.0 or above is required!
-All older versions will not work.
-:::
+Please refer to the [release page](https://github.com/MagicMirrorOrg/MagicMirror/releases)
+to see which node version is required.