ci: update reference docs (withastro#10440)

Co-authored-by: delucis <[email protected]>
Co-authored-by: Sarah Rainsberger <[email protected]>

src/content/docs/en/reference/configuration-reference.mdx

@@ -462,8 +462,8 @@ Control the output file format of each page. This value may be set by an adapter
 
 #### Effect on Astro.url
 Setting `build.format` controls what `Astro.url` is set to during the build. When it is:
-- `directory` - The `Astro.url.pathname` will include a trailing slash to mimic folder behavior; ie `/foo/`.
-- `file` - The `Astro.url.pathname` will include `.html`; ie `/foo.html`.
+- `directory` - The `Astro.url.pathname` will include a trailing slash to mimic folder behavior. (e.g. `/foo/`)
+- `file` - The `Astro.url.pathname` will include `.html`. (e.g. `/foo.html`)
 
 This means that when you create relative URLs using `new URL('./relative', Astro.url)`, you will get consistent behavior between dev and build.