doc: Update FAQ entry on filelists

Include information about the automated logic for downloading metadata.

doc/user_faq.rst

@@ -151,3 +151,5 @@ Starting with Fedora 40, I noticed repository metadata is synchronized much fast
 This is because filelists metadata is no longer downloaded by default. This change is associated with the Fedora system-wide `change <https://fedoraproject.org/wiki/Changes/DNFConditionalFilelists>`_, and the related `change <https://pagure.io/packaging-committee/pull-request/1321>`_ in the Fedora packaging guidelines policy, which specifies that packages must not rely on filepath dependencies requiring filelists metadata.
 
 All Fedora packages have been adjusted to align with this updated behavior, and users don't need to take any additional action. If you encounter any issues, such as non-compliance from a third-party package or if you prefer filelists metadata to be consistently downloaded, you can configure it using the :ref:`optional_metadata_types <optional_metadata_types-label>` configuration option.
+
+For commands relying on filelists metadata, and when a file path argument is provided by the user, dnf will attempt to automatically download the required metadata.