subbuglist generates `name=` HTML checker recommends using `id`

[kglotfelty]

for example in bugs/dm.xml it has

  <buglist>
    <subbuglist title="General" ref="bugs.general">  

which gets published as

<h3><a name="bugs.general">General</a></h3>

The nifty HTML checker suggests that name= is obsolete and to use an id instead.

"file:/proj/web-cxc-dmz-prev/htdocs/ciao4.16/bugs/dm.html":162.5-162.27: info warning: The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.

maybe replace with a <span/> ?