fix typo (#1362)

Author: boshek

docs/websites/website-blog.qmd

@@ -277,7 +277,7 @@ Blogs can use any of the 25 [Bootswatch](https://bootswatch.com/) themes include
 
 Blogs typically include an RSS feed that allows their content to be easily syndicated to feed readers and other websites. You can enable RSS for a blog by doing the following:
 
-1.  In the `quarto.yml` file, add a `site-url` and `description` to the `website` key (without these options being set in the project file, Quarto cannot generate a feed). For example:
+1.  In the `_quarto.yml` file, add a `site-url` and `description` to the `website` key (without these options being set in the project file, Quarto cannot generate a feed). For example:
 
     ``` yaml
     website: