bug#37651: html-name-anchor obsolete, should be html-id-anchor

[Juri Linkov]

>> html-name-anchor is an interactive compiled Lisp function in
>> ‘sgml-mode.el’.
>>
>> That's great except these days
>> <a name="X"></a>
>> is obsolete. One should write
>> <a id="X"></a>.
>
> It's obsolete in HTML5, but it's still commonly understood.  I'm not
> sure what we should do in these instances.
>
>> (But bummer,
>> C-c C-c i runs the command html-image (found in mhtml-mode-map), which
>> is an interactive compiled Lisp function in ‘sgml-mode.el’.
>> So one cannot just make C-c C-c n now C-c C-c i.)
>
> Yeah, that's also a problem.

A good mnemonic key for HTML id would be C-c C-c #