Fix github#35823 Use backticks to format references to the file name (g…

…ithub#35830)

Co-authored-by: Alex Nguyen <[email protected]>

content/pages/setting-up-a-github-pages-site-with-jekyll/adding-a-theme-to-your-github-pages-site-using-jekyll.md

@@ -28,7 +28,7 @@ People with write permissions for a repository can add a theme to a {% data vari
 1. Navigate to __config.yml_.
 {% data reusables.repositories.edit-file %}
 1. Add a new line to the file for the theme name.
-   * To use a supported theme, type `theme: THEME-NAME`, replacing _THEME-NAME_ with the name of the theme as shown in the `_config.yml` of the theme's repository (most themes follow a `jekyll-theme-NAME` naming convention). For a list of supported themes, see [Supported themes](https://pages.github.com/themes/) on the {% data variables.product.prodname_pages %} site. For example, to select the Minimal theme, type `theme: jekyll-theme-minimal`.
+   * To use a supported theme, type `theme: THEME-NAME`, replacing THEME-NAME with the name of the theme as shown in the `_config.yml` of the theme's repository (most themes follow a `jekyll-theme-NAME` naming convention). For a list of supported themes, see [Supported themes](https://pages.github.com/themes/) on the {% data variables.product.prodname_pages %} site. For example, to select the Minimal theme, type `theme: jekyll-theme-minimal`.
    * To use any other Jekyll theme hosted on {% data variables.product.prodname_dotcom %}, type `remote_theme: THEME-NAME`, replacing THEME-NAME with the name of the theme as shown in the README of the theme's repository.
 {% data reusables.files.write_commit_message %}
 {% data reusables.files.choose-commit-email %}
@@ -43,7 +43,7 @@ People with write permissions for a repository can add a theme to a {% data vari
 
 {% data reusables.pages.navigate-site-repo %}
 {% data reusables.pages.navigate-publishing-source %}
-1. Create a new file called _/assets/css/style.scss_.
+1. Create a new file called `/assets/css/style.scss`.
 1. Add the following content to the top of the file:
 
    ```scss