📝 docs: add reference to hugo.toml as a configuration file

Since January 17, 2023, starting with [v0.110.0](https://github.com/gohugoio/hugo/releases/tag/v0.110.0), `hugo.toml` as the default configuration file

exampleSite/content/docs/installation/index.md

@@ -97,7 +97,7 @@ Then continue to [set up the theme configuration files](#set-up-theme-configurat
 
 ### Set up theme configuration files
 
-In the root folder of your website, delete the `config.toml` file that was generated by Hugo. Copy the `*.toml` config files from the theme into your `config/_default/` folder. This will ensure you have all the correct theme settings and will enable you to easily customise the theme to your needs.
+In the root folder of your website, delete the `hugo.toml` (or `config.toml`) file that was generated by Hugo. Copy the `*.toml` config files from the theme into your `config/_default/` folder. This will ensure you have all the correct theme settings and will enable you to easily customise the theme to your needs.
 
 {{< alert >}}
 **Note:** You should not overwrite the `module.toml` file if one already exists in your project!