Manual:$wgXMLMimeTypes/es

Detalles
This setting allows users to specify what XML-based formats they wish to detect via MimeMagic. It maps the root element used by the XML-based format to the MIME type used for that format.

In this associative array, the key is the root element of the XML document (or xmlns-URI:root-element), and the value is the associated MIME type.