Refs #33842 -- Removed incorrect :file: role in contrib docs.

The file role is not appropriate for URLs and URL path-components.

docs/ref/contrib/sitemaps.txt

@@ -156,9 +156,9 @@ Note:
         In both cases, "absolute path" means a URL that doesn't include the
         protocol or domain. Examples:
 
-        * Good: :file:`'/foo/bar/'`
-        * Bad: :file:`'example.com/foo/bar/'`
-        * Bad: :file:`'https://example.com/foo/bar/'`
+        * Good: ``'/foo/bar/'``
+        * Bad: ``'example.com/foo/bar/'``
+        * Bad: ``'https://example.com/foo/bar/'``
 
         If :attr:`~Sitemap.location` isn't provided, the framework will call
         the ``get_absolute_url()`` method on each object as returned by

docs/ref/contrib/syndication.txt

@@ -210,8 +210,8 @@ items based on information in the feed's URL.
 
 The police beat feeds could be accessible via URLs like this:
 
-* :file:`/beats/613/rss/` -- Returns recent crimes for beat 613.
-* :file:`/beats/1424/rss/` -- Returns recent crimes for beat 1424.
+* ``/beats/613/rss/`` -- Returns recent crimes for beat 613.
+* ``/beats/1424/rss/`` -- Returns recent crimes for beat 1424.
 
 These can be matched with a :doc:`URLconf </topics/http/urls>` line such as::
 
@@ -314,7 +314,7 @@ URLs
 ----
 
 The ``link`` method/attribute can return either an absolute path (e.g.
-:file:`"/blog/"`) or a URL with the fully-qualified domain and protocol (e.g.
+``"/blog/"``) or a URL with the fully-qualified domain and protocol (e.g.
 ``"https://www.example.com/blog/"``). If ``link`` doesn't return the domain,
 the syndication framework will insert the domain of the current site, according
 to your :setting:`SITE_ID setting <SITE_ID>`.