[CentOS-docs] New contributor

[Marcus Moeller]

Dear Ernesto.

> AFAIK, besides translating the missing wiki pages to spanish, we'll
> need to review what is already translated, since there could be
> something that needs to be updated to be in sync with english content.

Please keep in mind to add the Revision notes to the translated pages
as described on the Contribute site.

Best Regards
Marcus