fix: revert doc url change

Author: skjnldsv

admin_manual/configuration_files/file_sharing_configuration.rst

@@ -98,7 +98,7 @@ forcing them.
    <https://github.com/owncloud/core/issues/7009>`_ for discussion of this.
 
 .. note:: There are more sharing options on config.php level available:
-   :doc:`Configuration Parameters <../configuration_server/config_sample_php_parameters>`
+   `Configuration Parameters <https://docs.nextcloud.com/server/latest/admin_manual/configuration_server/config_sample_php_parameters.html#sharing>`_
 
 .. _transfer_userfiles_label: