docs: move standalone example to platform usage

docs/modules/standalone.md

@@ -7,6 +7,21 @@ This is unlike the other modules which typically use a `programs.nixvim.*` prefi
 
 There are **no** standalone-specific options available.
 
+## Using in another configuration
+
+Here is an example on how to integrate into a NixOS or Home-manager configuration when using flakes.
+
+The example assumes your standalone config is the `default` package of a flake, and you've named the input "`nixvim-config`".
+```nix
+{ inputs, system, ... }:
+{
+  # NixOS
+  environment.systemPackages = [ inputs.nixvim-config.packages.${system}.default ];
+  # home-manager
+  home.packages = [ inputs.nixvim-config.packages.${system}.default ];
+}
+```
+
 ## Extending an existing configuration
 
 Given a `nvim` derivation obtained from `makeNixvim` or `makeNivxmiWithModule` it is possible to create a new derivation with additional options.

docs/user-guide/install.md

@@ -73,15 +73,6 @@ There are also some helper functions in `<nixvim>.lib.${system}` like:
 
 The nixvim derivation can then be used like any other package!
 
-For more information you can look at the [nixvim standalone flake template](https://github.com/nix-community/nixvim/blob/main/templates/simple/flake.nix).
+For an example, see the [nixvim standalone flake template](https://github.com/nix-community/nixvim/blob/main/templates/simple/flake.nix).
 
-Here is an example on how to integrate into a NixOS or Home-manager configuration when using flake parts (assuming your standalone flake's input is `nixvim-config`):
-```nix
-{ inputs, system, ... }:
-{
-  # NixOS
-  environment.systemPackages = [ inputs.nixvim-config.packages.${system}.default ];
-  # home-manager
-  home.packages = [ inputs.nixvim-config.packages.${system}.default ];
-}
-```
+For more information see [Standalone Usage](../modules/standalone.md).