Clean up help comments

configuration.nix

@@ -12,10 +12,9 @@
     ];
 
   # List packages installed in system profile. To search, run:
-  # $ nix search wget
+  # $ nix search example
   environment.systemPackages = with pkgs; [
   #  vim # Do not forget to add an editor to edit configuration.nix! The Nano editor is also installed by default.
-  #  wget
     ansible
     birdtray
     bitwarden-cli