Item cross-reference issue

[manuelfuenmayor]

This issue comes from the feedback provided by BIPM in metanorma/bipm-si-brochure#53

Item cross-references render different list items respect to the source they point to. For example:

The purpose of this section is to clarify the terms that will be used in the following
sections on <<item-1>> primary thermometry and <<item-2>> defined temperature scales.
A clear and well-defined nomenclature is essential to support an unambiguous taxonomy of
methods in the _MeP_-K. The _MeP_-K uses the following definitions.

. [[item-1]]_Primary thermometry_ is carried out using a thermometer based on a...

Output (HTML):

<<item-1>> and <<item-2>> render as a) and b), respectively. But they should be 1. and 2., like the source.

[opoudjis]

In fact the type of the ordered list, and any start value, are being ignored in the generation of crossreferences to list items, which hardcodes ISO's list numbering.

[opoudjis]

And make isodoc respect any ol type supplied by standoc; we will override to ignore in ISO.

[opoudjis]

This will likely not work in Word, which wants list CSS styles. Oh well.