treewide: Mark Nix blocks in markdown as Nix

This should help us with highlighting and future formatting.

3 files changed, 9 insertions, 9 deletions

diff --git a/nixos/modules/programs/digitalbitbox/default.md b/nixos/modules/programs/digitalbitbox/default.md
index 9bca14e97ffe..c93d0f2b7f0a 100644
--- a/nixos/modules/programs/digitalbitbox/default.md
+++ b/nixos/modules/programs/digitalbitbox/default.md
@@ -4,7 +4,7 @@ Digital Bitbox is a hardware wallet and second-factor authenticator.
 
 The `digitalbitbox` programs module may be installed by setting
 `programs.digitalbitbox` to `true` in a manner similar to
-```
+```nix
 programs.digitalbitbox.enable = true;
 ```
 and bundles the `digitalbitbox` package (see [](#sec-digitalbitbox-package)),
@@ -21,7 +21,7 @@ For more information, see <https://digitalbitbox.com/start_linux>.
 
 The binaries, `dbb-app` (a GUI tool) and `dbb-cli` (a CLI tool), are available
 through the `digitalbitbox` package which could be installed as follows:
-```
+```nix
 environment.systemPackages = [
   pkgs.digitalbitbox
 ];
@@ -31,13 +31,13 @@ environment.systemPackages = [
 
 The digitalbitbox hardware package enables the udev rules for Digital Bitbox
 devices and may be installed as follows:
-```
+```nix
 hardware.digitalbitbox.enable = true;
 ```
 
 In order to alter the udev rules, one may provide different values for the
 `udevRule51` and `udevRule52` attributes by means of overriding as follows:
-```
+```nix
 programs.digitalbitbox = {
   enable = true;
   package = pkgs.digitalbitbox.override {
diff --git a/nixos/modules/programs/plotinus.md b/nixos/modules/programs/plotinus.md
index fac3bbad1e08..b59d0d5c188b 100644
--- a/nixos/modules/programs/plotinus.md
+++ b/nixos/modules/programs/plotinus.md
@@ -12,6 +12,6 @@ palette provides a searchable list of of all menu items in the application.
 
 To enable Plotinus, add the following to your
 {file}`configuration.nix`:
-```
+```nix
 programs.plotinus.enable = true;
 ```
diff --git a/nixos/modules/programs/zsh/oh-my-zsh.md b/nixos/modules/programs/zsh/oh-my-zsh.md
index 6a310006edbf..7e4a41641eea 100644
--- a/nixos/modules/programs/zsh/oh-my-zsh.md
+++ b/nixos/modules/programs/zsh/oh-my-zsh.md
@@ -9,7 +9,7 @@ prompt themes.
 The module uses the `oh-my-zsh` package with all available
 features. The initial setup using Nix expressions is fairly similar to the
 configuration format of `oh-my-zsh`.
-```
+```nix
 {
   programs.zsh.ohMyZsh = {
     enable = true;
@@ -33,7 +33,7 @@ environment variable for this which points to a directory with additional
 scripts.
 
 The module can do this as well:
-```
+```nix
 {
   programs.zsh.ohMyZsh.custom = "~/path/to/custom/scripts";
 }
@@ -48,7 +48,7 @@ which bundles completion scripts and a plugin for `oh-my-zsh`.
 
 Rather than using a single mutable path for `ZSH_CUSTOM`,
 it's also possible to generate this path from a list of Nix packages:
-```
+```nix
 { pkgs, ... }:
 {
   programs.zsh.ohMyZsh.customPkgs = [
@@ -89,7 +89,7 @@ If third-party customizations (e.g. new themes) are supposed to be added to
     [upstream repo.](https://github.com/robbyrussell/oh-my-zsh/tree/91b771914bc7c43dd7c7a43b586c5de2c225ceb7/plugins)
 
 A derivation for `oh-my-zsh` may look like this:
-```
+```nix
 { stdenv, fetchFromGitHub }:
 
 stdenv.mkDerivation rec {