Update installation command in documentation

Removed 'sudo' from the installation command.

The script checks that it is not running as root, so the following error will appear if it is started with “sudo sh”:

"Do not run this script as root!
aborting installation..."

Author: Pupy200mine

apps/docs/src/users/getting-started/installation.md

@@ -82,7 +82,7 @@ If on rebuild you get hash related errors, you should run `nix flake update mill
 This installer is entirely open source and we encourage the community audit the [source code](https://github.com/SteamClientHomebrew/Millennium/blob/main/scripts/install.sh).
 
 ```bash
-curl -fsSL "https://raw.githubusercontent.com/SteamClientHomebrew/Millennium/main/scripts/install.sh" | sudo sh
+curl -fsSL "https://raw.githubusercontent.com/SteamClientHomebrew/Millennium/main/scripts/install.sh" | sh
 ```
 
 ### Post Installation