Add FAQ example

README.md

@@ -74,13 +74,13 @@ It is often the easiest to move everything depending on the arguments into the `
 
 ### default/example is a string/has extra surrounding quotes
 
-This is caused by a missing `lib.literalExpression` in default/example. Please open a pull request against the source of that option to fix this.
+This is caused by a missing `lib.literalExpression` in default/example. Please open a pull request against the source of that option to fix this. (e.g. [change in nixos-hardware](https://github.com/NixOS/nixos-hardware/pull/1343))
 
 ## Debugging `options.json`
 
 Generating a `options.json` in a `nix repl` can be done with the following snippet:
 
-```
+```nix
 :b (pkgs.nixosOptionsDoc { inherit ((lib.evalModules { modules = [ { config._module.check = false; } outputs.nixosModules.default ]; })) options; warningsAreErrors = false; }).optionsJSON
 ```