Update the test server link that was updated in the English documentation
(colombia.rst) in the Spanish version as well (colombia_ES.rst).
Remove the incorrect link to the production server (which was a duplicate
of the test link instead) to be consistent with other versions of the
document.
closesodoo/documentation#1130
Signed-off-by: Victor Feyens (vfe) <vfe@odoo.com>