Update README.md

Add code fence language for better readability of examples
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Pablo Ovelleiro Corral 2021-11-22 07:52:01 +01:00 committed by GitHub
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@ -109,7 +109,7 @@ An example `flake.nix` demonstrating this approach is below. `vmware` or
`virtualbox` images can be built from the same `configuration.nix` by running
`nix build .#vmware` or `nix build .#virtualbox`
```
```nix
{
inputs = {
nixpkgs.url = "nixpkgs/nixos-unstable";